7d^2=21

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


Simplifying
7d2 = 21

Solving
7d2 = 21

Solving for variable 'd'.

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

Divide each side by '7'.
d2 = 3

Simplifying
d2 = 3

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

See similar equations:

| 3n+2=2n-6 | | 28+5y-11=17y-10-3y | | 4/3(21/4)+2=-1 | | 6/7X3/4 | | 3x=7+4x | | x-3.51=-9 | | -8m-10=106 | | 41+3y-12=11y-12-2y | | 7/4-5/3 | | 27.8=p-28 | | 7/4-5/3d | | 3x^2-8x-15=0 | | 3g-3=35 | | x-3.27=-9 | | 12x-279=2x-9 | | -5/6-4-3 | | 20=-5v | | 18+6n=6(3-8n) | | -6/17=x+10/17 | | 4(w+1)=2(1-2w)-6 | | 20=5v | | 22-6x=14+2x | | 49-6x=3x+20 | | 3(a+6)/2=24 | | 0=x-3-y | | 2+5(5-2m)=39-8m | | X=1.057/10.3 | | 3(x+2)+1x=12 | | 6+4x+2-2x=-2 | | 3/x=7/12 | | -3x+2=-15/4x+3 | | 3(-3+x)=18-6x |

Equations solver categories