Question

< Previous1Next >Factoring Polynomials: Mastery Test1Select the correct answer.What is the completely factored form of this polynomial?x3 + 3x2 - 6x-18A. (x-2)(x - 3)(x + 3)OB. (x2 - 6/x+3)C. (x2 + 3)(x-6)OD. (x+6)(x - 1)(x + 3)ResetNext

Answer 1

`x^3+3x^2-6x-18`

We can do the following:

`x^2(x+3)-6(x+3)=(x+3)(x^2-6)`

Then the correct answer would be:

`B\mathrm{}(x^2-6)(x+3)`

For the second case we have the following:

`9x^2-64y^2`

We can do this:

`(3x-8y)(3x+8y)`