84x^2+76x+16=0

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Solution for 84x^2+76x+16=0 equation:



84x^2+76x+16=0
a = 84; b = 76; c = +16;
Δ = b2-4ac
Δ = 762-4·84·16
Δ = 400
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{400}=20$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(76)-20}{2*84}=\frac{-96}{168} =-4/7 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(76)+20}{2*84}=\frac{-56}{168} =-1/3 $

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