7x2+12x+-16=0

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Solution for 7x2+12x+-16=0 equation:



7x^2+12x+-16=0
We add all the numbers together, and all the variables
7x^2+12x=0
a = 7; b = 12; c = 0;
Δ = b2-4ac
Δ = 122-4·7·0
Δ = 144
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{144}=12$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(12)-12}{2*7}=\frac{-24}{14} =-1+5/7 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(12)+12}{2*7}=\frac{0}{14} =0 $

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