SOLUTION: x^2+2x-11=0 ???
solve each equation by completing the square thanks for your help!!!
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Question 641789: x^2+2x-11=0 ???
solve each equation by completing the square thanks for your help!!!
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Do it like this one.
==========================
4x^2+12x-7=0
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Divide by a, the coeffient of x^2
c = (b/2)^2 = (3/2)^2 = 9/4
Add c to both sides
x + 3/2 = ± 2
x = -3/2 ± 2
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