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Please solve the equation $x^2+2x-3x-1=0$
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This gives, $x^2 -x -1 = 0$

using quadratic formula, as it can not be easily factorized,

$x = -b \pm \dfrac{\sqrt{b^2 - 4ac}}{2a}$

$= 1 \pm \dfrac{\sqrt{-1^2 - 4(1)(-1)}}{2(1)}$

$x = 1.62$or $x= -0.62$
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