4x^2+7x-12=23-16x

Solution for 4x^2+7x-12=23-16x equation:

4x^2+7x-12=23-16x

We move all terms to the left:

4x^2+7x-12-(23-16x)=0

We add all the numbers together, and all the variables

4x^2+7x-(-16x+23)-12=0

We get rid of parentheses

4x^2+7x+16x-23-12=0

We add all the numbers together, and all the variables

4x^2+23x-35=0

a = 4; b = 23; c = -35;
Δ = b2-4ac
Δ = 232-4·4·(-35)
Δ = 1089
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1089}=33$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(23)-33}{2*4}=\frac{-56}{8}
=-7
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(23)+33}{2*4}=\frac{10}{8}
=1+1/4
$