5r^3+40r^2=100r

Simple and best practice solution for 5r^3+40r^2=100r 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+40r^2=100r equation:


Simplifying
5r3 + 40r2 = 100r

Reorder the terms:
40r2 + 5r3 = 100r

Solving
40r2 + 5r3 = 100r

Solving for variable 'r'.

Reorder the terms:
-100r + 40r2 + 5r3 = 100r + -100r

Combine like terms: 100r + -100r = 0
-100r + 40r2 + 5r3 = 0

Factor out the Greatest Common Factor (GCF), '5r'.
5r(-20 + 8r + r2) = 0

Factor a trinomial.
5r((-10 + -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 '(-10 + -1r)' equal to zero and attempt to solve: Simplifying -10 + -1r = 0 Solving -10 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1r = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1r = 0 + 10 -1r = 0 + 10 Combine like terms: 0 + 10 = 10 -1r = 10 Divide each side by '-1'. r = -10 Simplifying r = -10

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, -10, 2}

See similar equations:

| 16x^3-10x^2+4x= | | X+13+100=213 | | 2x(x+3)=1-(x-2) | | 6-9x=144-30x | | 2m^2=0 | | 2R+15=100 | | (6x-3)-(2x^2+7x+9)=0 | | 3x+24=13x+96 | | 3x+13=6x-4 | | 2x+6-3=13 | | -7(a+1)+5(2x-3)=8 | | 51.2=r+128 | | 3c+5=0 | | 2x^2=-2+x | | -3=(-a)+(-4) | | 2m^2+13m=15 | | 6r+12=-6 | | 2r^2-r-15=0 | | 4x-10y=7 | | +5x-5= | | 9x+3a-10=(3x+x) | | 5y-4x=9 | | k-8=3k+6 | | M^2+14m-30=2 | | -4.4=-y | | 25n^2+3=52 | | [-9]+x=-15 | | 2Y+10=2 | | 45=7(15+x) | | 4x^2+22+24=0 | | 4(2s+2)=17 | | 3b+2=0 |

Equations solver categories