SOLUTION: what is the solution to this problem 2x^2-(square root 7)x-10=0

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Question 101302: what is the solution to this problem
2x^2-(square root 7)x-10=0
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
2x^2-(square root 7)x-10=0
2x^2-(sqrt7)x-10=0
a=2, b= -sqrt7, c=-10
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x = [sqrt7 +- sqrt(7 - 4*1*-10)]/2
x = [sqrt7 +- sqrt(7 +40)]/2
x = [sqrt7 +- sqrt(47)]/2
x = 4.751 or x = -2.105
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Cheers,
stan Y.