18x^2+6x-60=0

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Solution for 18x^2+6x-60=0 equation:



18x^2+6x-60=0
a = 18; b = 6; c = -60;
Δ = b2-4ac
Δ = 62-4·18·(-60)
Δ = 4356
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{4356}=66$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-66}{2*18}=\frac{-72}{36} =-2 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+66}{2*18}=\frac{60}{36} =1+2/3 $

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