Question

Factor 5x4 - 30x2 - 135.

Answer 1

-5^2x7

Answer 2

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Answer 3

factor out the "5"
and think of \(x^4\) as \(u^2\)

Answer 4

so the steps are:
5x^4-30x^2-135
5(x^4-6x^2-27)
5(x^2-9)(x^2+3)
5(x-3)(x+3)(x^2+3)

Answer 5

you'd have
\[5(u^2-6u-27)\]
now, what two numbers
(a) multiply to five -27
(b) add to give -6

Answer 6

thank you=)

Answer 7

Dont forget to mark the best response !! and have a good day !