SOLUTION: this one is a pain and I need help! x^2+8=57 its one of these a +-square root 65 b +-square root 57-8 c +-square root 7 d +-square root 57+8

Algebra ->  Algebra  -> Radicals -> SOLUTION: this one is a pain and I need help! x^2+8=57 its one of these a +-square root 65 b +-square root 57-8 c +-square root 7 d +-square root 57+8      Log On

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Question 103869: this one is a pain and I need help!
x^2+8=57
its one of these
a +-square root 65
b +-square root 57-8
c +-square root 7
d +-square root 57+8
Answer by edjones(7311) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+8=57
x^2-49=0 subtract 57 from each side.
(x-7)(x+7)=0 Factor
x=7, x=-7
Ed