2x^2-20=30

Simple and best practice solution for 2x^2-20=30 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^2-20=30 equation: 


Simplifying
2x2 + -20 = 30

Reorder the terms:
-20 + 2x2 = 30

Solving
-20 + 2x2 = 30

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 2x2 = 30 + 20

Combine like terms: -20 + 20 = 0
0 + 2x2 = 30 + 20
2x2 = 30 + 20

Combine like terms: 30 + 20 = 50
2x2 = 50

Divide each side by '2'.
x2 = 25

Simplifying
x2 = 25

Take the square root of each side:
x = {-5, 5}

See similar equations:

| -8-4=10x+2-9x | | -2+15=14x-4-13x | | 4t+0.2=1.3 | | 6x+9-5x=1 | | -2+15=14x-4-13 | | x^2-4x-sqrt(x+1)=0 | | 7x+8+2x=-100 | | -2+10=14x-5-13x | | a^2=8 | | a^4-6a^2-a+5=0 | | 6x-8+3x=73 | | x=2.5+-0.5y | | -5c+2=-3 | | 5y-9y=-21-27 | | (5x-5)-(2x-4)=(3x+3) | | -7c+3=-32 | | 14=-5+3a | | -65=3x+5x+7 | | (5x-5)-(6x-2)=2x+4 | | -8-(-37)=x/2 | | 10(x-1)+4(x+4)=24 | | -6x-9+5x=-15 | | 80-6x=12x+18 | | -24-(-5)=x/5 | | 9(56)=x-4 | | 8(x-2)-3(8x-9)=-17(x+1)+5 | | 3/8x+3/4x+1/2 | | -4x+10+3x=21 | | 2(3c-1)-1=4c+7 | | 24/18+2/5 | | x/42=-6+28 | | 20-q+q^2=0 |

Equations solver categories