7x2+48x-7=0

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Solution for 7x2+48x-7=0 equation:



7x^2+48x-7=0
a = 7; b = 48; c = -7;
Δ = b2-4ac
Δ = 482-4·7·(-7)
Δ = 2500
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{2500}=50$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(48)-50}{2*7}=\frac{-98}{14} =-7 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(48)+50}{2*7}=\frac{2}{14} =1/7 $

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