SOLUTION: sqrt of y + 10 = y - 2 solve each radical equation. check your solution

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Question 433053: sqrt of y + 10 = y - 2
solve each radical equation. check your solution

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi
sqrt%28y%2B10%29=+%28y-2%29
y + 10 = y^2-4y+4
y^2 -5y -6 = 0
factoring
(y-6)(y+1) = 0
Note:SUM of the outside terms(y) and the inside terms(-6y) = -5y
(y-6) = 0 +y+=highlight%28+6%29
(y+1) = 0 y = -1 |Extraneous, cannot use sqrt(9)≠ -3
CHECKING our Answer***
sqrt%2816%29+=+6-2+=+4