Please advise if my answer is correct.

Question

I need to simplify this problem:

(5x2^ + 11 - 9)(-2x2^ -x + 17)

My answer is: -10x4^ -x + 34

I am incorrect?

Thank you

Answer 1

see my reply here:
http://www.jiskha.com/display.cgi?id=1488737021

type 5x2^ as 5x^2 etc

so I will read that as, assuming the middle term in the first bracket is 11x
(5x^2 + 11x - 9)(-2x^2 -x + 17)
= -10x^4 - 5x^3 + 85x^2 - 22x^3 - 11x^2 + 187x + 18x^2 + 9x - 153
= -10x^4 - 27 x^3 + 92x^2 + 196x - 153

Answer 2

thank you...I understand and can follow your steps. My teacher did not have and middle term after the 11...I don't know if she forgot it but it is only 11...that is what confused me