x^2+18x=x^2+81

Simple and best practice solution for x^2+18x=x^2+81 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for x^2+18x=x^2+81 equation:


Simplifying
x2 + 18x = x2 + 81

Reorder the terms:
18x + x2 = x2 + 81

Reorder the terms:
18x + x2 = 81 + x2

Add '-1x2' to each side of the equation.
18x + x2 + -1x2 = 81 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
18x + 0 = 81 + x2 + -1x2
18x = 81 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
18x = 81 + 0
18x = 81

Solving
18x = 81

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '18'.
x = 4.5

Simplifying
x = 4.5

See similar equations:

| 7(7x-5)+10x= | | (x+4)(x^2-5x+6)=0 | | 3(x+4)=3x+9 | | -9d-24=-3[d+8]-6d | | 6+3x=-7x-74 | | -51=7x-9 | | (x-5)(5x-6)=0 | | 5x+10=x+80 | | 9=-5+X | | x^2+y^2+10y+24=0 | | 3x^2+4x+3y^2-8y-9=0 | | -3(14+2x)=0 | | 9x^2+10x-16=0 | | 1x+24x+44-4x-5+55=167 | | 1.2=1.2x+1.2 | | 1.4=0.7x+1.4 | | y^2+4x-4y-20=0 | | 7(4x-16)=-252 | | x/(-7)=4 | | x+120=x+144 | | x/(-9)=2 | | 6x+119=11x-11 | | 33+3x=0 | | 8/x-6=2x | | x^2-3y+6x+12=0 | | 4x=3y+y | | x^3-5x^2+4x+0=0 | | 2x-3=31+3x | | y=3x+5b-20 | | 4x-12=22-8x | | 1/4x=45 | | 5x=37-2y |

Equations solver categories