2x^2-18=8

Simple and best practice solution for 2x^2-18=8 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 2x^2-18=8 equation:


Simplifying
2x2 + -18 = 8

Reorder the terms:
-18 + 2x2 = 8

Solving
-18 + 2x2 = 8

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + 2x2 = 8 + 18

Combine like terms: -18 + 18 = 0
0 + 2x2 = 8 + 18
2x2 = 8 + 18

Combine like terms: 8 + 18 = 26
2x2 = 26

Divide each side by '2'.
x2 = 13

Simplifying
x2 = 13

Take the square root of each side:
x = {-3.605551275, 3.605551275}

See similar equations:

| y=69.8 | | 8j=504 | | 28h=224 | | -4u+3=11 | | 9-1/2y=4x | | m+108=990 | | 61.2=6(m+2.3) | | -5x+3=3-4x-9 | | (2)(3)(4x)-(2)(3)(5x)=6 | | s(x)=1450+7x | | 12tanx-4cotx=0 | | m-222=151 | | 2x+22=4x+3 | | 12tanx+4cotx=0 | | -5(9k+4)=19+7k | | 2(s+3)=5s-3 | | -4(5-r)=16 | | 9x^2-24=18 | | -2h+-16=4 | | X+y=145 | | 2=3d-1 | | 12(-2x+4)=13x-5 | | 6m^(1/5) | | 7=3b-8 | | s(x)=1450x+7x | | m(x)=4.4x | | 5w-16=79 | | -13=5/9(x-32) | | -8x+9-12x=4x-13-5x | | 3x^2+18=-9 | | 5(x-1)+8(x+1)= | | -4.8=-8n |

Equations solver categories