SOLUTION: Solve for x: √(x-6)√(x-6) = 15
a. 225
b. 21
c. 231
d. no solution
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Question 152648: Solve for x: √(x-6)√(x-6) = 15
a. 225
b. 21
c. 231
d. no solution
Answer by mducky2(62) (Show Source): You can put this solution on YOUR website!
It looks a lot harder than it is. Any time an equation has two square roots with the same thing under them, we can just multiply them together:
When you square the square root of anything, the square and the square root basically cancel each other out. Now it's a lot easier to solve:
Therefore, the answer is b.
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