32.1k views
1 vote
Factor 4x^3-400x thanks a lot

Factor 4x^3-400x thanks a lot-example-1

1 Answer

3 votes

Answer:

4x(x-10)(x+10)

Explanation:

4x^3-400x

Factor out 4x

4x(x^2-100)

We know that x^2-100 is the difference of squares

a^2 - b^2 = (a-b)(a+b)

4x(x^2-100)= 4x(x^2 -10^2)

4x(x-10)(x+10)

User Ordo
by
3.4k points