2x^2+18=20

Simple and best practice solution for 2x^2+18=20 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=20 equation: 


Simplifying
2x2 + 18 = 20

Reorder the terms:
18 + 2x2 = 20

Solving
18 + 2x2 = 20

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 = 20 + -18

Combine like terms: 18 + -18 = 0
0 + 2x2 = 20 + -18
2x2 = 20 + -18

Combine like terms: 20 + -18 = 2
2x2 = 2

Divide each side by '2'.
x2 = 1

Simplifying
x2 = 1

Take the square root of each side:
x = {-1, 1}

See similar equations:

| x^4-125x^2+484=0 | | 2x(x+4)+x^2-3(4x-7)x=6x^2+12 | | y^2+5y-13=y-1 | | 4x^3-19x^2+19x+6=0 | | x^2+18x=-7 | | 9x^2-34-2x=0 | | -2(24x^2+9x-2)=0 | | (24x^2+9x-2)=0 | | (-48x^2-18x+4)=y | | -48x^2-18x+4=0 | | (-48x^2-18x+4)=0 | | (3x^2+4x+0)=4 | | 4(3x^2+4x+0)=0 | | (x)=x^2-3x+2 | | x^2+12x+61=0 | | 5x^2+6x+7=x^2-4x | | 9x^2=1-7x | | x^2-8x+5=0 | | 4x^2+28x-15=0 | | 7x^2-3=11 | | x^2-14x+9=0 | | x^2-6xy-y^3=(x-y) | | A=x^2-6xy-y^3 | | y=145x-5x^2 | | X^2+x^2=90.25 | | X^2+x^2=9.5 | | 2x^2+4x+8= | | 16x^2-25x=0 | | 16x^2+9=0 | | -11x^2=x+11 | | 4X^2=13 | | 4x^2=100 |

Equations solver categories