-2x^2+18=

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


Simplifying
-2x2 + 18 = 0

Reorder the terms:
18 + -2x2 = 0

Solving
18 + -2x2 = 0

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 = 0 + -18

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

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

Divide each side by '-2'.
x2 = 9

Simplifying
x2 = 9

Take the square root of each side:
x = {-3, 3}

See similar equations:

| 10h-4=-7 | | 5(-9)-(-13)= | | 6(2-x)=2x+4 | | x^2+18x+41=0 | | -9z+12=39 | | -(34+76)= | | -9x+3z-y-5x+y+4z-z+2y-x= | | (x-3)2=9 | | 15x^2+42x-9=0 | | 6x-[2-(x-1)]=x-5(x+1) | | 3x^3+9x^2-4x-12= | | (4x-3)(x+7)=0 | | (x-1)(x+2)=2x | | (X-10)(x-8)=-1 | | V=ZMK | | 25.1=2*3.14r | | -4x+2+5x=3x-15 | | 2x^2-x-18=0 | | 7(x-7)+19=4(x-6) | | 7x-17=4+(x-3) | | -8(3+6x)= | | -4x+12=-4(2x+3) | | 0.8(x-8)=12.0 | | 2x/3-5x/8=26 | | -15=3x+3 | | 3y^2-14y+8=0 | | 3*(x+4)=18-x | | 13-(x+9)=5x-8 | | 3x/2+x/5=17 | | 25.1=2(3.14)r | | 4(x+8)+6(x+10)+11x+20= | | 9-3x=7-5x |

Equations solver categories