9x^2-81y^2=0

Simple and best practice solution for 9x^2-81y^2=0 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 9x^2-81y^2=0 equation: 


Simplifying
9x2 + -81y2 = 0

Solving
9x2 + -81y2 = 0

Solving for variable 'x'.

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

Add '81y2' to each side of the equation.
9x2 + -81y2 + 81y2 = 0 + 81y2

Combine like terms: -81y2 + 81y2 = 0
9x2 + 0 = 0 + 81y2
9x2 = 0 + 81y2
Remove the zero:
9x2 = 81y2

Divide each side by '9'.
x2 = 9y2

Simplifying
x2 = 9y2

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

See similar equations:

| 9x^2-24x+20=0 | | 5n^2-10n-2=3 | | w^2-3w=28 | | 1+x=10 | | 6x+2+x=1+4x+7 | | 4t^2-11t+7= | | z^2=9z | | y-3x+2=2x+4x^2 | | -5x-7=28 | | 12x-(-90)=-18 | | j(x)=15a^2-9a | | x+2x+15=102 | | h(x)=10-5a^2 | | 4x^3+15x^2+10x=0 | | 25=0.07t | | 3t^2+14t-5= | | 3-2n=7 | | y+1=6x+4x^2 | | g(x)=8y^2-6y | | x+15x=74 | | 7n^2-13n-2= | | xy+3y+5x+15= | | m^2+3m-1=0 | | 0.8w-0.5w+0.2w=3 | | 2n^2+5n-3= | | 15+3n=111 | | 3.9-17.9=-2.3 | | 5n^2-4n-1= | | 8x-0=0 | | 12-f=12 | | 15x=20(25x/100) | | 5x^2+10x-7=0 |

Equations solver categories