7k^2=21

Simple and best practice solution for 7k^2=21 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 7k^2=21 equation: 


Simplifying
7k2 = 21

Solving
7k2 = 21

Solving for variable 'k'.

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

Divide each side by '7'.
k2 = 3

Simplifying
k2 = 3

Take the square root of each side:
k = {-1.732050808, 1.732050808}

See similar equations:

| -4+=2(x-5) | | -2x+4x=8 | | 2(x+7)-7x=18-5(x+4) | | 6x^2+5x+-4=0 | | 36x^2-18x-108=0 | | 2x^2+19x+51=6 | | 5x+3-8x=8-(3x+5) | | =256-16x^2 | | s=256-16x^2 | | 2x^2+3x=6y | | 7(6z-8)= | | x^2+5y-2=0 | | 33n+9n=0 | | 0.24y-1.8=0.14y+1-0.6y | | 3y-19=-21+4y | | -3x^2+18x+165=0 | | x-0.6=8.86 | | x*x-4=96 | | 110=360+x | | 360=110+x | | 2(5z-1)-5(z+4)=3(z+1) | | 110=90+x | | an=6n+9 | | x(2x-4)=(2x+5)(x-2) | | 5t=2 | | 56x^2+17x-3=0 | | X+80=15 | | 2(6z-1)-5(z+2)=2(z+1) | | 9+2n=9n+2 | | 6x+5(2x-6)=-10-4x | | -(5y+1)-(-4y-6)=-1 | | 1(5y+1)-(-4y-6)=-1 |

Equations solver categories