7x^2+3x-124=0

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Solution for 7x^2+3x-124=0 equation:



7x^2+3x-124=0
a = 7; b = 3; c = -124;
Δ = b2-4ac
Δ = 32-4·7·(-124)
Δ = 3481
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{3481}=59$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-59}{2*7}=\frac{-62}{14} =-4+3/7 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+59}{2*7}=\frac{56}{14} =4 $

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