(4x-3)(3x+4)=0

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Solution for (4x-3)(3x+4)=0 equation:



(4x-3)(3x+4)=0
We multiply parentheses ..
(+12x^2+16x-9x-12)=0
We get rid of parentheses
12x^2+16x-9x-12=0
We add all the numbers together, and all the variables
12x^2+7x-12=0
a = 12; b = 7; c = -12;
Δ = b2-4ac
Δ = 72-4·12·(-12)
Δ = 625
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{625}=25$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-25}{2*12}=\frac{-32}{24} =-1+1/3 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+25}{2*12}=\frac{18}{24} =3/4 $

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