Question 337318
The question is multiply:
(x^8 + 7x) (x^8 - 7x) 
Here's what I got.
x^8(x^8) + x^8(-7x) + 7x(x^8) + 7x(-7x)=
(x^16 - 49x^2 
It's right.  Add a right side parentheses, tho.