Question

Factor 5x4 - 30x2 - 135.

Answer 1

20 - 60 - 135

95

Explanation:

All you have to do is add/subtract the factors together

Answer 2

5(x - 3)(x + 3)(x^2 + 3)

Explanation:

First take out the GCF of the 3 numbers (5):-

= 5(x^4 - 6x^2 - 27)

= 5(x^2 - 9)(x^2 + 3)

= 5(x - 3)(x + 3)(x^2 + 3).