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09-09-2017
Mathematics

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Completing the square:

2x^2 + 5x + 1 = 0

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09-09-2017

Divide by 2
X^2+5/2x+1/2
Subtract 1/2 and then take the middle number divide by two and the. Square it. Add it on the other side
X^2+5/2x+25/16=-1/2+25/16
Take x+ 5/4 squared
(X+5/4)^2=17/16
Subtract 5/4
X=-3/16
Or if you don't need x it would be (x+5/4)^2+17/16

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