SOLUTION: solve following equation by using the square root property (w-10)^2=81 w=? and w=?

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Question 212951: solve following equation by using the square root property
(w-10)^2=81
w=? and w=?
Found 2 solutions by rapaljer, Earlsdon:
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
Take the square root of each side:
(w-10)^2=81
w-10 = 9 or w-10=-9

Add +10 to each side:
w-10+10=9+10 or w-10+10 = -9+10
w=19 or w= 1

R^2

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Solve:
%28w-10%29%5E2+=+81 Take the square root of both sides.
sqrt%28%28w-10%29%5E2%29+=+sqrt%2881%29 Recalling that: sqrt%28x%5E2%29+=+x
w-10+=+9 or w-10+=+-9 Add 10 to both sides of each solution.
highlight%28w+=+19%29 or highlight%28w+=+1%29