SOLUTION: (x-4)(x+1)

Question 521820: (x-4)(x+1)
Answer by geometryworm7271(30) (Show Source): You can put this solution on YOUR website!
x(x)=x^2
-4x1=-4
x(-4)=-4x
x(1)=x
add all those up...
x^2-3x-4=0
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