7y^3-21y^2-3220y=0

Simple and best practice solution for 7y^3-21y^2-3220y=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 7y^3-21y^2-3220y=0 equation:


Simplifying
7y3 + -21y2 + -3220y = 0

Reorder the terms:
-3220y + -21y2 + 7y3 = 0

Solving
-3220y + -21y2 + 7y3 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '7y'.
7y(-460 + -3y + y2) = 0

Factor a trinomial.
7y((-20 + -1y)(23 + -1y)) = 0

Ignore the factor 7.

Subproblem 1

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

Subproblem 2

Set the factor '(-20 + -1y)' equal to zero and attempt to solve: Simplifying -20 + -1y = 0 Solving -20 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + -1y = 0 + 20 Combine like terms: -20 + 20 = 0 0 + -1y = 0 + 20 -1y = 0 + 20 Combine like terms: 0 + 20 = 20 -1y = 20 Divide each side by '-1'. y = -20 Simplifying y = -20

Subproblem 3

Set the factor '(23 + -1y)' equal to zero and attempt to solve: Simplifying 23 + -1y = 0 Solving 23 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-23' to each side of the equation. 23 + -23 + -1y = 0 + -23 Combine like terms: 23 + -23 = 0 0 + -1y = 0 + -23 -1y = 0 + -23 Combine like terms: 0 + -23 = -23 -1y = -23 Divide each side by '-1'. y = 23 Simplifying y = 23

Solution

y = {0, -20, 23}

See similar equations:

| y/8-3/4=7/2 | | 0.05/2 | | y/8-3-4=7/2 | | 6t^3-18t^2-648t=0 | | 0.01/3 | | 8t^3-24t^2-2160t=0 | | 2a-1/3=9 | | 6y^3-18y^2-2268y=0 | | 5(-8x+1)+42x=9 | | 7v^2+18v+8=0 | | sin(2x)=sin(4x) | | 0.005(30+-6b)+0.03b=0.015*10 | | 0.005a+0.03b=0.015*10 | | 12+2=1 | | -5x-62=112-11x | | 50x+30y=570 | | 4+11x=64+6 | | 4x-3=11x-76 | | tx-ux=3r | | 16+3x=x+18 | | 15+x=x+2x+3 | | 7x-3x=x+9 | | -84-4x=112-11x | | 20-3x=3x+2 | | -82+x=94-6x | | -2s+3=5+24 | | -22+12x=-2x+135 | | (35x+16y)(21x+28y)= | | 4x^3+13x^2-9=0 | | y=1/2*9 | | 4w-17=-11 | | (35x+16y)-(21x+28y)= |

Equations solver categories