81y^2-8=13

Simple and best practice solution for 81y^2-8=13 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 81y^2-8=13 equation: 


Simplifying
81y2 + -8 = 13

Reorder the terms:
-8 + 81y2 = 13

Solving
-8 + 81y2 = 13

Solving for variable 'y'.

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

Add '8' to each side of the equation.
-8 + 8 + 81y2 = 13 + 8

Combine like terms: -8 + 8 = 0
0 + 81y2 = 13 + 8
81y2 = 13 + 8

Combine like terms: 13 + 8 = 21
81y2 = 21

Divide each side by '81'.
y2 = 0.2592592593

Simplifying
y2 = 0.2592592593

Take the square root of each side:
y = {-0.509175077, 0.509175077}

See similar equations:

| -32+5a=-8(a+6)+3 | | 3a-2a-a+11= | | .2x+3=8.6 | | 0=-3x^2+9x+9 | | 3(1-4b)=-6b+33 | | 28-7x=7x-6(2+4x) | | 8x-7=-4x+29 | | a+29=-(4a+3)-8 | | tan(4x+5)=5 | | a+29=-(4a+3)-3 | | 5(x+3)+3x=8 | | -5m=-105 | | -162=-9x | | -15n=-90 | | -754=29x | | 31+(x+44)+(180-4x)=180 | | 5(x+1)=6 | | 4(-r+1)+1=-r+29 | | 31+1d=65 | | 31+1d=50 | | (4x^2+3x-1)-(x^2-6x+8)= | | 3x=3x-21 | | 31+1d=12 | | 4x=9-x | | (x-1)(x+3)=4 | | 167=6+7(2-7x) | | ln(2x+1)+ln(x-1)=lnx | | 0.0058x^2-0.67x+15.2=-3 | | 36i^2+16i+36=0 | | (2x)(x+2)=52 | | z^2-6iz-9+4i=0 | | f(x)=2x^2-8x-1 |

Equations solver categories