Conary C
24 November 2022 15:15
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Conary C
24 November 2022 15:15
Pertanyaan
faktor dari bentuk (x^2 +x^-2 -3) adalah... A. (x + x^-1 -1)(x - x^-1 -1) B. (x + x^-1 +1)(x - x^-1 -1) C. (x - x^-1 +1)(x - x^-1 -1) D. (x - x^-1 +1)(x - x^-1 +1) E. (x + x^-1 -1)(x - x^-1 +1)
faktor dari bentuk (x^2 +x^-2 -3) adalah...
A. (x + x^-1 -1)(x - x^-1 -1)
B. (x + x^-1 +1)(x - x^-1 -1)
C. (x - x^-1 +1)(x - x^-1 -1)
D. (x - x^-1 +1)(x - x^-1 +1)
E. (x + x^-1 -1)(x - x^-1 +1)
1
2
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Indrasta A
16 Desember 2022 14:42
<p>Jawabannya C, karena: </p><p>(x-x<sup>-1</sup>+1)(x-x<sup>-1</sup>-1)</p><p>=x<sup>2</sup>-x<sup>0</sup>-x-x<sup>0</sup>+x<sup>-2</sup>+x<sup>-1</sup>+x-x<sup>-1</sup>-1 </p><p>=x<sup>2</sup>-(x<sup>0</sup>)-x-(x<sup>0</sup>)+x<sup>-2</sup>+x<sup>-1</sup>+x-x<sup>-1</sup>-1 </p><p>=x<sup>2</sup>-(1)-x-(1)+x<sup>-2</sup>+x<sup>-1</sup>+x-x<sup>-1</sup>-(1) </p><p>=x<sup>2</sup>-x+x<sup>-2</sup>+x<sup>-1</sup>+x-x<sup>-1</sup>-(3)</p><p>=x<sup>2</sup>-(x)+x<sup>-2</sup>+(x<sup>-1</sup>)+(x)-(x<sup>-1</sup>)-(3) </p><p>=x<sup>2</sup>+x<sup>-2</sup>-3</p><p> </p>
Jawabannya C, karena:
(x-x-1+1)(x-x-1-1)
=x2-x0-x-x0+x-2+x-1+x-x-1-1
=x2-(x0)-x-(x0)+x-2+x-1+x-x-1-1
=x2-(1)-x-(1)+x-2+x-1+x-x-1-(1)
=x2-x+x-2+x-1+x-x-1-(3)
=x2-(x)+x-2+(x-1)+(x)-(x-1)-(3)
=x2+x-2-3
· 5.0 (3)
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Gabriel T
23 Desember 2022 13:15
<p>Hebat </p>
Hebat
· 0.0 (0)
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