r^2+-72=0

Simple and best practice solution for r^2+-72=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 r^2+-72=0 equation: 


Simplifying
r2 + -72 = 0

Reorder the terms:
-72 + r2 = 0

Solving
-72 + r2 = 0

Solving for variable 'r'.

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

Add '72' to each side of the equation.
-72 + 72 + r2 = 0 + 72

Combine like terms: -72 + 72 = 0
0 + r2 = 0 + 72
r2 = 0 + 72

Combine like terms: 0 + 72 = 72
r2 = 72

Simplifying
r2 = 72

Take the square root of each side:
r = {-8.485281374, 8.485281374}

See similar equations:

| 100x^2+kx+49=0 | | 3660/12 | | 2+7+x=12 | | -x-3+7x=-51 | | 3(c+8)=c+2 | | 12x+7y=3660 | | (6x+2)+7x=41 | | .939x^2+190x-144157=0 | | -6=x-3x+10 | | r^2-72=0 | | 3.5+(x/10000)=13.5-X/10000 | | 6(3.2-1)=3.6 | | x/3-10=7 | | 7x+2-3x=18 | | 7x-2=-2x-2 | | (2y+5)(y+6)=-4(2y+5) | | 6x^2-13x=8 | | 35=4x | | 4+3x=2x+10 | | 20=(x-7)(x+4) | | 6x+4=25+3x | | 5(b-3)=4(b+1) | | 2x-8=-7x-62 | | (-2)-4= | | 4m-9=8m-21 | | 15m^2-7m=0 | | 10x^2-9y^2=20 | | 2/3+1/12 | | 9(10)2+5(3)= | | v=4/3*3.14*5*5*5 | | 5x-10+6x=-43 | | 10x^2+9y^2=20 |

Equations solver categories