5r^3+30r^2=80r

Simple and best practice solution for 5r^3+30r^2=80r 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 5r^3+30r^2=80r equation:


Simplifying
5r3 + 30r2 = 80r

Reorder the terms:
30r2 + 5r3 = 80r

Solving
30r2 + 5r3 = 80r

Solving for variable 'r'.

Reorder the terms:
-80r + 30r2 + 5r3 = 80r + -80r

Combine like terms: 80r + -80r = 0
-80r + 30r2 + 5r3 = 0

Factor out the Greatest Common Factor (GCF), '5r'.
5r(-16 + 6r + r2) = 0

Factor a trinomial.
5r((-8 + -1r)(2 + -1r)) = 0

Ignore the factor 5.

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 '(-8 + -1r)' equal to zero and attempt to solve: Simplifying -8 + -1r = 0 Solving -8 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1r = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1r = 0 + 8 -1r = 0 + 8 Combine like terms: 0 + 8 = 8 -1r = 8 Divide each side by '-1'. r = -8 Simplifying r = -8

Subproblem 3

Set the factor '(2 + -1r)' equal to zero and attempt to solve: Simplifying 2 + -1r = 0 Solving 2 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1r = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1r = 0 + -2 -1r = 0 + -2 Combine like terms: 0 + -2 = -2 -1r = -2 Divide each side by '-1'. r = 2 Simplifying r = 2

Solution

r = {0, -8, 2}

See similar equations:

| 5m-6m=6-7m | | 13-13-3d= | | 1-2x-5x=0 | | 9.5z=3.1z-46.72 | | -8-13= | | -5.6(3p+5)-2.4(4p-6)= | | 8-5(5-3x)=2x+9 | | .66y+6=15 | | -3x+2=-2(x-1) | | w^2-8=0 | | -3(x-8)=5x+8 | | x^3-1.2x+2=0 | | 100[0.04(m+6)]= | | 10x+2=5x+3 | | .66y+6= | | 2+6x+5=3(2x+1) | | 23=v-7 | | -5a-15=60 | | 10x+125=5x+125 | | -2=4-4x+5x | | 8(-6x-3y)=8(-12) | | 6d+8r=M | | 6d+8r= | | 56s^2+23s-63=0 | | 6x+2y=12whatisy | | (4x^2+23x-6)=0 | | -5k+11k=8k-12 | | -3q^2-24q-45=0 | | t+59-67+89.89=65 | | b-2+2b=36 | | 2x+5-(x+7)=32 | | 4s^2-23s-6=0 |

Equations solver categories