Question 1098708
(X+1)^2 + 6^2 = 9^2
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Step 1, say what you want to do.
If it's "solve for x":
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(X+1)^2 + 36 = 81
(X+1)^2 = 45
x+1 = sqrt(45) = 3sqrt(5)
x = -1 + 3sqrt(5)
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And,
x+1 = -sqrt(45) = -3sqrt(5)
x = -1 - 3sqrt(5)