(2x^2-8) (x-4)^2find the value of coefficient of x^3
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Answer:
-16
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Explanation-
- (2x²-8)(x-4)²
- =(2x²-8)(x²+16-8x)
- =2x^4+32x²-16x³-8x²-128+64x
- =2x^4-16x³+24x²+64x-128
So here, coefficient of x³ is -16
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