Pertanyaan

Jika x 10 = 2 dan y 10 = 7 − 2 Maka hasil dari xy adalah ....

Jika $\frac{10}{x} = 2$ dan $\frac{10}{y} = 7 - 2$

Maka hasil dari xy adalah ....

$begin mathsize 14px style fraction numerator open parentheses square root of 14 minus 2 close parentheses over denominator 100 end fraction end style$
$begin mathsize 14px style fraction numerator open parentheses square root of 14 plus 2 close parentheses over denominator 10 end fraction end style$

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dan Maka

$size 14px 10 over size 14px x size 14px equals square root of size 14px 2 fraction numerator size 14px 10 over denominator square root of size 14px 2 end fraction size 14px equals size 14px x fraction numerator size 14px 10 over denominator square root of size 14px 2 end fraction times fraction numerator square root of size 14px 2 over denominator square root of size 14px 2 end fraction size 14px equals size 14px x fraction numerator size 14px 10 square root of size 14px 2 over denominator size 14px 2 end fraction size 14px equals size 14px x size 14px x size 14px equals size 14px 5 square root of size 14px 2$

dan

$size 14px 10 over size 14px y size 14px equals square root of size 14px 7 size 14px minus square root of size 14px 2 fraction numerator size 14px 10 over denominator square root of size 14px 7 size 14px minus square root of size 14px 2 end fraction size 14px equals size 14px y size 14px y size 14px equals fraction numerator size 14px 10 over denominator square root of size 14px 7 size 14px minus square root of size 14px 2 end fraction size 14px times fraction numerator square root of size 14px 7 size 14px plus square root of size 14px 2 over denominator square root of size 14px 7 size 14px plus square root of size 14px 2 end fraction size 14px y size 14px equals fraction numerator size 14px 10 open parentheses square root of size 14px 7 size 14px plus square root of size 14px 2 close parentheses over denominator size 14px 7 size 14px minus size 14px 2 end fraction size 14px y size 14px equals fraction numerator size 14px 10 open parentheses square root of size 14px 7 size 14px plus square root of size 14px 2 close parentheses over denominator size 14px 5 end fraction size 14px y size 14px equals size 14px 2 open parentheses square root of size 14px 7 size 14px plus square root of size 14px 2 close parentheses$

Maka