Question

I know this is a stupid question but I forgot D:

How do I factor 16^4 - 1 and x^3 - x^2 + x + 3?

Answer 1

16x^4 - 1

(4x^2)^2 - 1^2

(4x^2 - 1)(4x^2 + 1)

((2x)^2 - 1^2)(4x^2 + 1)

(2x - 1)(2x + 1)(4x^2 + 1)

Answer 2

So 16x^4 - 1 factors to (2x - 1)(2x + 1)(4x^2 + 1)

Answer 3

Gaah thank you so much!! Do you know how to do the second one? o:

Answer 4

You'll have to test possible rational roots

then use synthetic or long division to factor

Answer 5

That sounds gross haha and thank you!

Answer 6

well you're not supposed to eat it, lol jk

but it's not so bad once you practice it a lot and get used to it

Answer 7

Haha i'll try O: I was never good at these anyways >.<

Answer 8

well that's what practice is for