Question

5. Multiply 9x^2(2x^2 + 8x).

A) 18x^4 + 72^3
B) 18x^2 + 72x^3
C) 11x^4 = 17x^3
D) 90x^4

Answer 1

I need help with this one as well

6. Factor the following polynomial completely: 30y^6 + 25y^5 - 10y^4.

A) 10y^4 (3y^2 + 2y - 1)
B) 5y (6y^4 + 5y^3 - 2y^2)
C) 5 (6y^6 + 5y^5 - 2y^4)
D) 5y^4 (6y^2 + 5y - 2)

Answer 2

if you distribute the 9x^2 you'll get 9x^2*2x^2 + 9x^2*8x