SOLUTION: please help me solve this equasion {{{x^2=7x+18}}}

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Question 9872: please help me solve this equasion x%5E2=7x%2B18
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
It's a quadratic equation, so set it equal to zero:
x%5E2+-+7x+-+18+=+0

Factor it:
%28x-9%29%28x%2B2%29+=+0

Set each factor = 0, and solve two separate problems:
x-9= 0
x=9

x+2=0
x=-2

R^2 at SCC