26-2(2x2)=4(x+2)+6x

Solution for 26-2(2x2)=4(x+2)+6x equation:

26-2(2x^2)=4(x+2)+6x

We move all terms to the left:

26-2(2x^2)-(4(x+2)+6x)=0


We calculate terms in parentheses: -(4(x+2)+6x), so:

4(x+2)+6x

We add all the numbers together, and all the variables

6x+4(x+2)

We multiply parentheses

6x+4x+8

We add all the numbers together, and all the variables

10x+8

Back to the equation:

-(10x+8)


We get rid of parentheses

-22x^2-10x-8+26=0

We add all the numbers together, and all the variables

-22x^2-10x+18=0

a = -22; b = -10; c = +18;
Δ = b2-4ac
Δ = -102-4·(-22)·18
Δ = 1684
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{1684}=\sqrt{4*421}=\sqrt{4}*\sqrt{421}=2\sqrt{421}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-10)-2\sqrt{421}}{2*-22}=\frac{10-2\sqrt{421}}{-44}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-10)+2\sqrt{421}}{2*-22}=\frac{10+2\sqrt{421}}{-44}
$