9a^3=81a

Simple and best practice solution for 9a^3=81a 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 9a^3=81a equation:


Simplifying
9a3 = 81a

Solving
9a3 = 81a

Solving for variable 'a'.

Reorder the terms:
-81a + 9a3 = 81a + -81a

Combine like terms: 81a + -81a = 0
-81a + 9a3 = 0

Factor out the Greatest Common Factor (GCF), '9a'.
9a(-9 + a2) = 0

Factor a difference between two squares.
9a((3 + a)(-3 + a)) = 0

Ignore the factor 9.

Subproblem 1

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

Subproblem 2

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

Subproblem 3

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

Solution

a = {0, -3, 3}

See similar equations:

| -16x^2+1654x+5106=0 | | -2+7n+6+5=4+8n | | 4(n-4)+1=7n+3 | | x=-5y-1 | | -1-8b=-8b-1 | | 3a=42 | | 2*-9= | | 11b=88 | | -8*2= | | -4*(-3)= | | -5*6*(-4)*3= | | 6(2-5x)+6(1-4x)=18 | | -0.4(-0.8)= | | -7x-22=18+3x | | -3*4*(-5)*6= | | y=6(-6)-2 | | x^3-6x^2= | | 3x-4y+4=0 | | X^2-6=30-3x^2 | | y=3(-6)+3 | | 8(3x-4)=232 | | 7x+8x=120 | | 15x^2+84x-36=0 | | 15x^2+84x=36 | | 16x^2+2x=2x+9 | | v(x)=4x^2-10x^2+6x | | 5x^3-35x^2+60x=0 | | -(-5w+x)-4(4x+5w)= | | X^2+8x+5=o | | .16d=-4 | | .83z-.66z=.33 | | 11n=8 |

Equations solver categories