s^3-4s^2=21s

Simple and best practice solution for s^3-4s^2=21s 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 s^3-4s^2=21s equation:


Simplifying
s3 + -4s2 = 21s

Reorder the terms:
-4s2 + s3 = 21s

Solving
-4s2 + s3 = 21s

Solving for variable 's'.

Reorder the terms:
-21s + -4s2 + s3 = 21s + -21s

Combine like terms: 21s + -21s = 0
-21s + -4s2 + s3 = 0

Factor out the Greatest Common Factor (GCF), 's'.
s(-21 + -4s + s2) = 0

Factor a trinomial.
s((-3 + -1s)(7 + -1s)) = 0

Subproblem 1

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

Subproblem 2

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

Subproblem 3

Set the factor '(7 + -1s)' equal to zero and attempt to solve: Simplifying 7 + -1s = 0 Solving 7 + -1s = 0 Move all terms containing s to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1s = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1s = 0 + -7 -1s = 0 + -7 Combine like terms: 0 + -7 = -7 -1s = -7 Divide each side by '-1'. s = 7 Simplifying s = 7

Solution

s = {0, -3, 7}

See similar equations:

| Loga=(4a-9) | | -8p=-3(0.25) | | a+28= | | 0=x^2+33x-90 | | s(t)=-16t^2+128t+4 | | s(t)=-16t^2+128t+4 | | s(t)=-16t^2+128t+4 | | -6(2p+3)-22=4(3p+8) | | 7(-2x+3)=-28(34-4x) | | 4x+3y+2z=7 | | 67=3x+4x+4 | | -74=-8x-2 | | 2.5a=60 | | 0.02x+0.25(70)=26.5 | | 3y=8x-6 | | 7(x-4)=8(x+4) | | 8(2y+18+3y)= | | 3y^2-3y+1=0 | | 12x-10=-11*9x | | 3x+10=-10 | | 28-14x=-24+12x | | y=4x+-1.5 | | 67=3x+4x+4x | | -4(9x-8)=2x | | 2=X-2x^2 | | 12n-n+1+3n= | | 4000-400x=4000 | | 3(-4x-6)=11x-2 | | -8(t-1)=64 | | -8(t-1)=64 | | -6(x-9)=-9(x-3) | | -2(-30x-15)=26(-36+6x) |

Equations solver categories