8r^3-72r=0

Simple and best practice solution for 8r^3-72r=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 8r^3-72r=0 equation:


Simplifying
8r3 + -72r = 0

Reorder the terms:
-72r + 8r3 = 0

Solving
-72r + 8r3 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '8r'.
8r(-9 + r2) = 0

Factor a difference between two squares.
8r((3 + r)(-3 + r)) = 0

Ignore the factor 8.

Subproblem 1

Set the factor 'r' equal to zero and attempt to solve: Simplifying r = 0 Solving r = 0 Move all terms containing r to the left, all other terms to the right. Simplifying r = 0

Subproblem 2

Set the factor '(3 + r)' equal to zero and attempt to solve: Simplifying 3 + r = 0 Solving 3 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + r = 0 + -3 Combine like terms: 3 + -3 = 0 0 + r = 0 + -3 r = 0 + -3 Combine like terms: 0 + -3 = -3 r = -3 Simplifying r = -3

Subproblem 3

Set the factor '(-3 + r)' equal to zero and attempt to solve: Simplifying -3 + r = 0 Solving -3 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + r = 0 + 3 Combine like terms: -3 + 3 = 0 0 + r = 0 + 3 r = 0 + 3 Combine like terms: 0 + 3 = 3 r = 3 Simplifying r = 3

Solution

r = {0, -3, 3}

See similar equations:

| 8-9x+8(x-8)=3(x-3) | | (x-1)/3+(x+2)/5=(x+8)/15 | | 40-3x= | | (2x-1)/2-(5x-5)/3=1/2 | | 3456x-789=678x*x | | 3456x-789=678x | | (2x-1)/2-5(x-1)/3=1/2 | | 3456x-789=678 | | -5x^5y^3-10x^3y^2-35xy=0 | | 35s^2-72s+36=0 | | s(11s+3)=8 | | c(11c+3)=8 | | t^2+9t=6t | | 5+3x-2/4=x | | 5+3x-8=5 | | c^2+16=8c | | r^2+20r=0 | | 2y+4=14 | | x-1=x/4+5 | | 5a^2=35a | | x=8x | | 0=x^2-14x-4 | | 345x*x-6788x=678 | | -2x+5y=21 | | x*x-67=57 | | 2y^2-3y+2=0 | | k+5-3-k= | | 8w^0= | | t^2-98=0 | | -x/x-4+9=6x/x-4 | | 8w^0-9= | | 5x^2=150 |

Equations solver categories