x=2√(x-1) please help!!!?
Im studying for a test in the a.m. and ive got the answers to a "study guide" but im not sure how to work this problem to get to the answer. Would be soooo happy if someone could help, and show the steps. thank you!!!
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square both sides
x^2 = 4 * (x - 1)
x^2 = 4x - 4
x^2 - 4x + 4 = 0
(x - 2) * (x - 2) = 0
x = 2
So I assume you want the equation solved?
x = 2â(x - 1)
x^2 = (2â(x - 1))^2
x^2 = 4(x - 1)
x^2 = 4x - 4
x^2 - 4x + 4 = 0
(x - 2)^2 = 0
x = 2