2x^2=81

Simple and best practice solution for 2x^2=81 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=81 equation:


Simplifying
2x2 = 81

Solving
2x2 = 81

Solving for variable 'x'.

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

Divide each side by '2'.
x2 = 40.5

Simplifying
x2 = 40.5

Take the square root of each side:
x = {-6.363961031, 6.363961031}

See similar equations:

| 32+24x= | | n^2+9=-6n | | -7b+5+2b=-20 | | -76+-18= | | 2x-3+5x=7+4x+2 | | 2x+23=6x-5 | | 1056-2x=3x+646-x | | -3x+6+12x=-3 | | 51-(7x+7)=7(x+2)+x | | -7x+6=-29 | | k^2-16k+64=0 | | k^2-16k+64= | | 5x-6=-46 | | 4m+6m=100 | | 5w^2-3=0 | | 30x+42= | | 4m+6f=100 | | 1+x=-2 | | 18x+20= | | 50-(3x+9)=3(x+2)+x | | 51x^2+17x=0 | | 4+36x= | | x^2+6+8=0 | | 6x-48= | | B=100 | | 4x-8=x-14 | | 5x+7y=315 | | 9x+2=3x+38 | | x^2+12x+5=0 | | 21-4x-x^2=0 | | x^2+10xy-75y^2=0 | | 2(3-3x-2x)+7(2x+5)=65 |

Equations solver categories