18r^3+51r^2-42r=

Simple and best practice solution for 18r^3+51r^2-42r= 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 18r^3+51r^2-42r= equation:


Simplifying
18r3 + 51r2 + -42r = 0

Reorder the terms:
-42r + 51r2 + 18r3 = 0

Solving
-42r + 51r2 + 18r3 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '3r'.
3r(-14 + 17r + 6r2) = 0

Factor a trinomial.
3r((-7 + -2r)(2 + -3r)) = 0

Ignore the factor 3.

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 '(-7 + -2r)' equal to zero and attempt to solve: Simplifying -7 + -2r = 0 Solving -7 + -2r = 0 Move all terms containing r to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -2r = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -2r = 0 + 7 -2r = 0 + 7 Combine like terms: 0 + 7 = 7 -2r = 7 Divide each side by '-2'. r = -3.5 Simplifying r = -3.5

Subproblem 3

Set the factor '(2 + -3r)' equal to zero and attempt to solve: Simplifying 2 + -3r = 0 Solving 2 + -3r = 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 + -3r = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -3r = 0 + -2 -3r = 0 + -2 Combine like terms: 0 + -2 = -2 -3r = -2 Divide each side by '-3'. r = 0.6666666667 Simplifying r = 0.6666666667

Solution

r = {0, -3.5, 0.6666666667}

See similar equations:

| 6c+27-3c=36 | | 50-10w=74-16w | | 15+8x=9x+21 | | 2x+10=4x-34 | | (3n+1)(n-1)=0 | | 4x-=4 | | 3x-(8x+6)=4x-24 | | 50+10w=74+16w | | -3y+6=-2(3y+3) | | 6x^2+13=28 | | (15p-1)+24+2(5+5p)=0 | | 3x+62=92 | | (3m-2)4+10m-7=x | | f(5)=2 | | -(-10x+2)=3(x+11) | | 6x+13x=28 | | 45=5*y | | (15p-1)+24+2(5+5p)=o | | -5(1-5x)+5(-8x-2)=-4x+-8x | | 1(x-18)+2(x+3)=x-26(6) | | 5-7+x=9x+7 | | 3r^2-12r-96= | | x+3.6=6.3 | | 1(x-18)+2(x+3)=(x-26)6 | | 9(u+6)=3u+6 | | 2(4x+8)=8x+16 | | (2x-y)+(6x-4)= | | -7x-2=2x-29 | | 8-16= | | 2x-10-3x=12 | | 5+1-(2s+3)=5s+1-2s-3 | | -8(x-6)=-6x-22 |

Equations solver categories