Question

Which expression shows a complete factorization of x^2(x+1)-9(x+1) ???? I NEED HELP! Thanks! :-)

Answer 1

just take x+1 common
it becomes (x^2-9)(x+1)

Answer 2

then x^2-9 = x^2-3^3

Answer 3

that's like a^2-b^2
which becomes
(x-3)(x+3)

Answer 4

so there you get (x+1)(x-3)(x+3)

Answer 5

P.S. \[a ^{2}-b ^{2} = (a+b) (a-b)\]

Answer 6

Thank you so much!

Answer 7

you are welcome :)

Answer 8

u mean that is x^2-3^2, right :)

Answer 9

oh yeah
typing mistake @RadEn

Answer 10

:)