2x(9-5x)-(-4x-(6x*6x))=

Solution for 2x(9-5x)-(-4x-(6x*6x))= equation:

2x(9-5x)-(-4x-(6x*6x))=

We move all terms to the left:

2x(9-5x)-(-4x-(6x*6x))-()=0

We add all the numbers together, and all the variables

2x(-5x+9)-(-4x-(+6x*6x))-()=0

We add all the numbers together, and all the variables

2x(-5x+9)-(-4x-(+6x*6x))=0

We multiply parentheses

-10x^2+18x-(-4x-(+6x*6x))=0


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

-4x-(+6x*6x)

We get rid of parentheses

-4x-6x*6x

Wy multiply elements

-36x^2-4x

Back to the equation:

-(-36x^2-4x)


We get rid of parentheses

-10x^2+36x^2+4x+18x=0

We add all the numbers together, and all the variables

26x^2+22x=0

a = 26; b = 22; c = 0;
Δ = b2-4ac
Δ = 222-4·26·0
Δ = 484
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{484}=22$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(22)-22}{2*26}=\frac{-44}{52}
=-11/13
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(22)+22}{2*26}=\frac{0}{52}
=0
$