SOLUTION: I was wondering if anyone could help me solve this homework problem x^2 = 2x + 15

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Question 22924: I was wondering if anyone could help me solve this homework problem
x^2 = 2x + 15
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
First, rewrite your equation in standard form: ax%5E2+%2B+bx+%2B+c+=+0
x%5E2+=+2x+%2B+15 becomes:
x%5E2+-+2x+-+15+=+0 Solve by factoring.
%28x+%2B+3%29%28x+-+5%29+=+0 Now apply the zero product principle.
x+%2B+3+=+0 and/or x+-+5+=+0
If x+%2B+3+=+0 then, x+=+-3
If x+-+5+=+0 then, x+=+5
The roots are:
x = -3
x = 5