20r^3+65r^2-60r=0

Simple and best practice solution for 20r^3+65r^2-60r=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 20r^3+65r^2-60r=0 equation:


Simplifying
20r3 + 65r2 + -60r = 0

Reorder the terms:
-60r + 65r2 + 20r3 = 0

Solving
-60r + 65r2 + 20r3 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '5r'.
5r(-12 + 13r + 4r2) = 0

Factor a trinomial.
5r((-4 + -1r)(3 + -4r)) = 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 '(-4 + -1r)' equal to zero and attempt to solve: Simplifying -4 + -1r = 0 Solving -4 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1r = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1r = 0 + 4 -1r = 0 + 4 Combine like terms: 0 + 4 = 4 -1r = 4 Divide each side by '-1'. r = -4 Simplifying r = -4

Subproblem 3

Set the factor '(3 + -4r)' equal to zero and attempt to solve: Simplifying 3 + -4r = 0 Solving 3 + -4r = 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 + -4r = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4r = 0 + -3 -4r = 0 + -3 Combine like terms: 0 + -3 = -3 -4r = -3 Divide each side by '-4'. r = 0.75 Simplifying r = 0.75

Solution

r = {0, -4, 0.75}

See similar equations:

| 70+x=130 | | 5s^2-10s=5s | | x-2+4y=3 | | 7(x+9)=9x+6-2x+57 | | 14-2(x+8)=5x-(3x-34) | | 3(x+3)=5x-1 | | -31=-7(2f-9) | | 8=u+2 | | -2(3x+7)+6-5x=80 | | x*70=40 | | 0.5x+0.4(30)=0.3(x+20) | | 8x+4x-57=76-7x | | 0.7(x+100)=0.77x-448 | | X-5.8=-13 | | 2(x-32)=3x | | 6(3x-4)=3(6x+5) | | 18+t=26 | | .18(24)+.03x=.06x(24+x) | | -1=-7-3x | | 5x+13x=64 | | 0.5(4z+6)+1.5=0.7(4z-5) | | 15-0.9(a-5)=0.8(12a-5) | | -(2x+2)-1=-(x+3) | | 29+4v=8(5v-9) | | (5+w)+8=(w+5)+8 | | 13x-4y=3 | | -x^7+x^4y^9=0 | | 75x-2600=225x-x^2 | | -c*y=a-a | | 14+1=26 | | 1.7r+7=1.4r+13 | | 49v^2+27v+4= |

Equations solver categories