math,correction

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Can someone correct these for me please..

Find the value of the polynomial
8x – 6 when x = 1 and when x = –1.

My answer:
So when x = 1 the value of the polynomial is: 2And when x = -1 the value of the polynomial is: -14

Multiply. (x – 8)2
Answer: x^2-16x+16




You first answer is correct, but the second has a problem.

Assuming that you mean (X-8)^2, what do you get when you multiply -8 by -8?

I hope this helps. Thanks for asking.

so then -8 (-8)= 64

so then it would be x^2+64x+16

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