Question

625x^2 + 625x - 36 = 0
find the value of x

Answer 1

$625 x^2 + 625 x - 36 = 0\\ \\discriminant = 625^2+4*625*36 = 480625\\ \\x = \frac{-625+-25*\sqrt{769}}{2*625}=-\frac{1}{2}+-\frac{\sqrt{769}}{50}\\ \\x=-1.0546\ or\ 0.0546\ approximately$

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$x^2 +x - 36/625 = 0\\ \\x^2+x-0.0576 = 0\\x = \frac{-1+-\sqrt{1.2304}}{2}$