Question

Explain, in complete sentences, how you would completely factor 3x3 + 27x2y – 24xy – 216y2 by using the grouping method. How would you check your factors for accuracy?

Answer 1

is this 3x^3?

Answer 2

yes, srry.

Answer 3

3x^3 + 27x^2y - 24xy-216y^2
3x^2(x+9y) - 24y(x+9y) = (3x^2-24y)(x+9y)

Answer 4

Thanks ;)

Answer 5

can you tell me what the GCF is?

Answer 6

it cant be higher than 3 because the first term has 3 and they dont all share a x or a y so since 3 devides coeficients then I guess 3