SOLUTION: can you help me simplify (x+2)(x+2)(x-1)is its x^3-x^2+4x+4? Not sure how to simplify when its three terms, i just know how to foil two

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Question 581944: can you help me simplify (x+2)(x+2)(x-1)is its x^3-x^2+4x+4? Not sure how to simplify when its three terms, i just know how to foil two
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
(x+2)(x+2)(x-1)

(x+2)(x^2-x+2x-2)

(x+2)(x^2+x-2)

x(x^2+x-2)+2(x^2+x-2)

x^3+x^2-2x+2x^2+2x-4

x^3+3x^2-4


So (x+2)(x+2)(x-1) fully expands and simplifies to x^3+3x^2-4