SOLUTION: I don't get this one, I get stuck on the 3rd step.
(x+9)^2=18
=x^2+81-18=0
=x^2+63=0
I don't know what to do after this since there is no square root of 63 that is a
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Question 585184: I don't get this one, I get stuck on the 3rd step.
(x+9)^2=18
=x^2+81-18=0
=x^2+63=0
I don't know what to do after this since there is no square root of 63 that is a whole number. help?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
(x+9)^2 = 18
If you FOIL(x+9)(x+9),you should get
x^2 + 18x + 81 = 18
x^2 + 18x + 63 = 0
this will not factor, use the quadratic formula to find x
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