4x^2-15x+2=-8x+4

Solution for 4x^2-15x+2=-8x+4 equation:

4x^2-15x+2=-8x+4

We move all terms to the left:

4x^2-15x+2-(-8x+4)=0

We get rid of parentheses

4x^2-15x+8x-4+2=0

We add all the numbers together, and all the variables

4x^2-7x-2=0

a = 4; b = -7; c = -2;
Δ = b2-4ac
Δ = -72-4·4·(-2)
Δ = 81
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{81}=9$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-7)-9}{2*4}=\frac{-2}{8}
=-1/4
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+9}{2*4}=\frac{16}{8}
=2
$