SOLUTION: 165=xsquare+2x

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Question 426975: 165=xsquare+2x
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
165=xsquare+2x
x^2+2x-165
Find the roots of the equation by quadratic formula

a=1, b=2,c=-165

b^2-4ac=4+660
b^2-4ac=664
x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29
x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29
x1=%28-2%2Bsqrt%28664%29%29%2F%282%29
x1=(-2+ 25.77)/ 2
x1= 11.88
x2=(-2-25.77)/2
x2=-13.88