SOLUTION: how do you solve this problem: (x-3)(x+7)

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Question 773109: how do you solve this problem: (x-3)(x+7)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
If you want to expand this out, then....

(x-3)(x+7)

x(x+7) - 3(x+7)

x*x+x*7 - 3*x- 3*7

x^2 + 7x - 3x - 21

x^2 + 4x - 21


Final Answer: x^2 + 4x - 21