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Please help I need this before 11 please!!

(x-9)^2/5=9

Collin, I would be glad to help. First, you need to multiply both sides by 5 to get (x - 9)^2 = 45. The next step would be to take the square root of both sides to get rid of the exponent. This would get (x - 9) = + or - sqrt(45). Notice the plus or minus, because there are two square roots of a positive number, one positive and one negative since positive times positive = positive and negative times negative = positive. Now, sqrt(45) can be simplified to 3* sqrt(5) since 45 = 9 * 5 and the square root of nine is 3 ( we already have the plus or minus so we just take positive 3).

So

X - 9 = + or - 3 sqrt(5).

Adding 9 to both sides we get the solution

X = 9 + or - 3 sqrt(5)

Good luck in Math :)

Anne

Algebra

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