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Given x = 1 / x, find the value of (X & # 178; - 5 / X-1 + 1) multiplied by X & # 179; - 1 / X & # 178; - 2x divided by (x + 3)
The x = 1 / X is the x = ± 1 (x \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\1-2-1) /
Given x square + 2x-5 = 0, find 2x cube + x square - 16x + 9
x²+2x-5=0
x²=-2x+5
x²+2x=5
2x³+x²-16x+9
=2x(-2x+5)+x²-16x+9
=-3x²-6x+9
=-3(x²+2x)+9
=-3×5+9
=-6
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