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If 1-2x-1=-2, then x =
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06 Jan 2022, 02:33
06 Jan 2022, 02:33
Expert Reply
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Question Stats:
81% (00:37) correct
18% (01:06) wrong based on 11 sessions
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Joined: 10 Apr 2015
Posts: 6218
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Re: If 1-2x-1=-2, then x =
[#permalink]
06 Jan 2022, 06:19
06 Jan 2022, 06:19
1
Carcass wrote:
Take: \(1-\sqrt{2x-1}=-2\)
Subtract \(1\) from both sides of the equation: \(-\sqrt{2x-1}=-3\)
Multiply both sides of the equation by\( -1\) to get: \(\sqrt{2x-1}=3\)
Square both sides of the equation: \((\sqrt{2x-1})^2=3^2\)
Simplify: \(2x-1=9\)
Solve: \(x = 5\)
Answer: \(5\)
gmatclubot
Re: If 1-2x-1=-2, then x = [#permalink]
06 Jan 2022, 06:19
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