20-x^2=-80

Simple and best practice solution for 20-x^2=-80 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 20-x^2=-80 equation: 


Simplifying
20 + -1x2 = -80

Solving
20 + -1x2 = -80

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 + -1x2 = -80 + -20

Combine like terms: 20 + -20 = 0
0 + -1x2 = -80 + -20
-1x2 = -80 + -20

Combine like terms: -80 + -20 = -100
-1x2 = -100

Divide each side by '-1'.
x2 = 100

Simplifying
x2 = 100

Take the square root of each side:
x = {-10, 10}

See similar equations:

| (y^2)-23y+112=0 | | b^2-4b=30+3b | | 2n+5=-13 | | -4.5x+1.4=-25.6 | | (y^2)-23x+112=0 | | 6x^2-10=140 | | M=-0.5d+50 | | -3-7(1-5k)=-115 | | 8+x^2=3x^2 | | -7x+29=50 | | 15a+5-8a=-1 | | 2x^2-6=x^2+30 | | t-2+x=2 | | 13-d=16 | | 4(2m-7)= | | 36s^2-9=0 | | 7x+4=2x+19 | | 4x^2+90x-1000=0 | | -6a^2=-18a | | 10x^2=5x^2+125 | | 4x^2-28x-75=0 | | 3(k-1)=18 | | -8(3x-6)=240 | | -220=5-x^2 | | 3x+4=-x+8 | | 6m^2+13m=5 | | 2j-2=7 | | 2+(3y-2)fory=-6 | | 4(16+4y)-y=4 | | 10x^2-27=7x^2 | | 9x+x=29 | | 4x^3-48x^2+143x-126=0 |

Equations solver categories