Question

What is the completely factored form of d^4 − 8d^2 + 16?

(d^2 + 4)(d^2 − 4)

(d^2 − 4)(d^2 − 4)

(d^2 + 4)(d + 2)(d − 2)

(d + 2)(d − 2)(d + 2)(d − 2)

Answer 1

I know it isn't (d^2 - 4)(d^2 - 4)

Answer 2

All you have to do is FOIL the answers into each other, and you will get an answer from one of them, that's the best and easiest way to do it with the answer choices you have.

Answer 3

of course it is not:)

Answer 4

hint: you have to factorize twice .

Answer 5

@lochana yep. you are right

Answer 6

@lochana @Maddy1251 is it (d + 2)(d − 2)(d + 2)(d − 2)

Answer 7

nope:)

Answer 8

try it again.

Answer 9

alright give me a sec...

Answer 10

okay. I waiting to give you my last hint

Answer 11

(d^2 + 4)(d + 2)(d − 2) is it, right?

Answer 12

exactly.

Answer 13

bye