Question

can you show me how to factor x^4-81x^2

Answer 1

x^2(x^2 - 81)
x^2(x + 9)(x - 9)

Answer 2

does that make sense?

Answer 3

and always check by using FOIL

Answer 4

you should get the original binomial

Answer 5

it does thank you so much I was totally over thinking it and couldn't get the right answer when I seen your work it was a duh moment lol

Answer 6

lol. good luck on your other questions if you have any :)

Answer 7

thanks