SOLUTION: How do you factor the polynomial x^2-3x-28

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Question 489990: How do you factor the polynomial x^2-3x-28
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

+x%5E2-3x-28....replace -3x with 4x-7x (these numbers are factors of 28)
+x%5E2%2B4x-7x-28...group

%28+x%5E2%2B4x%29-%287x%2B28%29

x%28+x%2B4%29-7%28x%2B4%29

%28x-7%29%28x%2B4%29