SOLUTION: x^2=Square root of (2x+3)

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Question 918654: x^2=Square root of (2x+3)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2=sqrt%282x%2B3%29
x%5E4=2x%2B3
x%5E4-2x-3=0
%28x%2B1%29%28x%5E3-x%5E2%2Bx-3%29=0
Two solutions.
x%2B1=0
x=-1
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graph%28300%2C300%2C-3%2C3%2C-3%2C3%2Cx%5E3-2x-3%29
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For the second solution, use Newton's method in EXCEL with a starting value of x=1.
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x=1.574743