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 ->  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


   

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(8007) 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