Choose one of the factors of 5x^3 – 135?

help pleaseeeeeeee, anyone ?

Answer 1

OK

First there is a factor of 5. So we know that either A or D is the correct answer.

5 (x^3 – 27)

Now I see that x^3-27 is a perfect cube, whose factors are x-3 and x^2+3x +9. So that means D is the correct answer.

Hope that helps.

Answer 2

d

5(x^3-27)
5(x-3)(x^2+3x+9)

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