SOLUTION: x^3+7x^2-4x-28=0
Solve.
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Question 541032: x^3+7x^2-4x-28=0
Solve.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
x^3+7x^2-4x-28=0
(x^3+7x^2)+(-4x-28)=0
x^2(x+7)+(-4x-28)=0
x^2(x+7)-4(x+7)=0
(x^2-4)(x+7)=0
(x-2)(x+2)(x+7)=0
x-2=0, x+2=0, x+7=0
x=2, x=-2, x=-7
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