3(x-9)+x*x=4x+x*x+16

Solution for 3(x-9)+x*x=4x+x*x+16 equation:

3(x-9)+x*x=4x+x*x+16

We move all terms to the left:

3(x-9)+x*x-(4x+x*x+16)=0

We multiply parentheses

3x+x*x-(4x+x*x+16)-27=0

Wy multiply elements

x^2+3x-(4x+x*x+16)-27=0

We get rid of parentheses

x^2+3x-4x-x*x-16-27=0

We add all the numbers together, and all the variables

x^2-1x-x*x-43=0

Wy multiply elements

x^2-1x^2-1x-43=0

We add all the numbers together, and all the variables

-1x-43=0

We move all terms containing x to the left, all other terms to the right

-x=43

x=43/-1

x=-43