Diperhatikan bahwa

<img align="middle" alt="begin mathsize 14px style 4 minus fraction numerator 1 over denominator 2 square root of 2 end fraction equals fraction numerator 8 square root of 2 minus 1 over denominator 2 square root of 2 end fraction end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»4«/mn»«mo»-«/mo»«mfrac»«mn»1«/mn»«mrow»«mn»2«/mn»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«/mfrac»«mo»=«/mo»«mfrac»«mrow»«mn»8«/mn»«msqrt»«mn»2«/mn»«/msqrt»«mo»-«/mo»«mn»1«/mn»«/mrow»«mrow»«mn»2«/mn»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«/mfrac»«/mrow»«/mstyle»«/math»" height="40" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -17px;" width="138" />

Selanjutnya bentuk&nbsp;<img align="middle" alt="begin mathsize 14px style fraction numerator 8 square root of 2 minus 1 over denominator 2 square root of 2 end fraction end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mfrac»«mrow»«mn»8«/mn»«msqrt»«mn»2«/mn»«/msqrt»«mo»-«/mo»«mn»1«/mn»«/mrow»«mrow»«mn»2«/mn»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«/mfrac»«/mstyle»«/math»" height="40" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -17px;" width="61" />&nbsp;dapat dirasionalkan dengan mengalikan pembilang dan penyebut dengan sekawan dari&nbsp;<img align="middle" alt="begin mathsize 14px style 2 square root of 2 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»2«/mn»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«/mstyle»«/math»" height="16" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -2px;" width="32" />, yaitu&nbsp;<img align="middle" alt="begin mathsize 14px style square root of 2 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«msqrt»«mn»2«/mn»«/msqrt»«/mstyle»«/math»" height="16" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -2px;" width="23" />. Sehingga diperoleh

<img align="middle" alt="begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator 8 square root of 2 minus 1 over denominator 2 square root of 2 end fraction end cell equals cell fraction numerator 8 square root of 2 minus 1 over denominator 2 square root of 2 end fraction cross times fraction numerator square root of 2 over denominator square root of 2 end fraction end cell row blank equals cell fraction numerator open parentheses 8 square root of 2 minus 1 close parentheses times square root of 2 over denominator 2 times open parentheses square root of 2 close parentheses squared end fraction end cell row blank equals cell fraction numerator 16 minus square root of 2 over denominator 4 end fraction end cell row blank equals cell 4 minus fraction numerator square root of 2 over denominator 4 end fraction end cell end table end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mtable columnspacing=¨0px¨ columnalign=¨right center left¨»«mtr»«mtd»«mfrac»«mrow»«mn»8«/mn»«msqrt»«mn»2«/mn»«/msqrt»«mo»-«/mo»«mn»1«/mn»«/mrow»«mrow»«mn»2«/mn»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«/mfrac»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mfrac»«mrow»«mn»8«/mn»«msqrt»«mn»2«/mn»«/msqrt»«mo»-«/mo»«mn»1«/mn»«/mrow»«mrow»«mn»2«/mn»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«/mfrac»«mo»§#215;«/mo»«mfrac»«msqrt»«mn»2«/mn»«/msqrt»«msqrt»«mn»2«/mn»«/msqrt»«/mfrac»«/mtd»«/mtr»«mtr»«mtd/»«mtd»«mo»=«/mo»«/mtd»«mtd»«mfrac»«mrow»«mfenced»«mrow»«mn»8«/mn»«msqrt»«mn»2«/mn»«/msqrt»«mo»-«/mo»«mn»1«/mn»«/mrow»«/mfenced»«mo»§#183;«/mo»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«mrow»«mn»2«/mn»«mo»§#183;«/mo»«msup»«mfenced»«msqrt»«mn»2«/mn»«/msqrt»«/mfenced»«mn»2«/mn»«/msup»«/mrow»«/mfrac»«/mtd»«/mtr»«mtr»«mtd/»«mtd»«mo»=«/mo»«/mtd»«mtd»«mfrac»«mrow»«mn»16«/mn»«mo»-«/mo»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«mn»4«/mn»«/mfrac»«/mtd»«/mtr»«mtr»«mtd/»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»4«/mn»«mo»-«/mo»«mfrac»«msqrt»«mn»2«/mn»«/msqrt»«mn»4«/mn»«/mfrac»«/mtd»«/mtr»«/mtable»«/mstyle»«/math»" height="176" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -89px;" width="181" />&nbsp;

 
Jadi, bentuk rasional dari&nbsp;<img align="middle" alt="begin mathsize 14px style 4 minus fraction numerator 1 over denominator 2 square root of 2 end fraction end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»4«/mn»«mo»-«/mo»«mfrac»«mn»1«/mn»«mrow»«mn»2«/mn»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«/mfrac»«/mrow»«/mstyle»«/math»" height="36" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -17px;" width="61" />&nbsp;adalah&nbsp;<img align="middle" alt="begin mathsize 14px style 4 minus fraction numerator square root of 2 over denominator 4 end fraction end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»4«/mn»«mo»-«/mo»«mfrac»«msqrt»«mn»2«/mn»«/msqrt»«mn»4«/mn»«/mfrac»«/mrow»«/mstyle»«/math»" height="34" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -11px;" width="52" />.

Rasionalkan&nbsp;<img align="middle" alt="begin mathsize 14px style 4 minus fraction numerator 1 over denominator 2 square root of 2 end fraction end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»4«/mn»«mo»-«/mo»«mfrac»«mn»1«/mn»«mrow»«mn»2«/mn»«msqrt»«mn»2«/mn»«/msqrt»«/mrow»«/mfrac»«/mrow»«/mstyle»«/math»" height="36" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -17px;" width="61" />&nbsp;

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