81-4d^2=0

Simple and best practice solution for 81-4d^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 81-4d^2=0 equation: 


Simplifying
81 + -4d2 = 0

Solving
81 + -4d2 = 0

Solving for variable 'd'.

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

Add '-81' to each side of the equation.
81 + -81 + -4d2 = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -4d2 = 0 + -81
-4d2 = 0 + -81

Combine like terms: 0 + -81 = -81
-4d2 = -81

Divide each side by '-4'.
d2 = 20.25

Simplifying
d2 = 20.25

Take the square root of each side:
d = {-4.5, 4.5}

See similar equations:

| -1(x+2)-5=7(x+2)+3 | | 13+4=-3 | | 10=4x+5x+1 | | (2b-5)(b-4)= | | -2.5(4x-3)= | | x+x+7x+4=80 | | x+42+y=360 | | 14z^7-16z^5/2z^3 | | 0.5(8x-4)=4x+2 | | 8y-5=3 | | 15y+35= | | 5g+9=2g+16 | | -6(-8-x+5)-4=-3(2x-7x-8)+1 | | x^5+x^4-6x^3+50x^2-75x+125=0 | | 73-u=3.73 | | 7j+3=59 | | X^9=16 | | 8-6(1+7a)=32+4a | | 13=1*4s | | (x-3/10)10 | | -9-4x=27 | | 9n=176 | | 17/12a=3/4 | | (3x-4)+6x+(9x+5)=60 | | 8(4k-4)=-4k-32 | | 10m+115=635 | | 9.1=37k+41 | | 4s-5+7s+1= | | 10+5x+6x=98 | | -72+69= | | 8/k=12/30 | | 9-3=-11 |

Equations solver categories