x^2(x^2-81)-(x^2-81)=0

Simple and best practice solution for x^2(x^2-81)-(x^2-81)=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 x^2(x^2-81)-(x^2-81)=0 equation:


Simplifying
x2(x2 + -81) + -1(x2 + -81) = 0

Reorder the terms:
x2(-81 + x2) + -1(x2 + -81) = 0
(-81 * x2 + x2 * x2) + -1(x2 + -81) = 0
(-81x2 + x4) + -1(x2 + -81) = 0

Reorder the terms:
-81x2 + x4 + -1(-81 + x2) = 0
-81x2 + x4 + (-81 * -1 + x2 * -1) = 0
-81x2 + x4 + (81 + -1x2) = 0

Reorder the terms:
81 + -81x2 + -1x2 + x4 = 0

Combine like terms: -81x2 + -1x2 = -82x2
81 + -82x2 + x4 = 0

Solving
81 + -82x2 + x4 = 0

Solving for variable 'x'.

Factor a trinomial.
(1 + -1x2)(81 + -1x2) = 0

Factor a difference between two squares.
((1 + x)(1 + -1x))(81 + -1x2) = 0

Factor a difference between two squares.
((9 + x)(9 + -1x))(1 + x)(1 + -1x) = 0

Subproblem 1

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

Subproblem 2

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

Subproblem 3

Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9

Subproblem 4

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-1, 1, -9, 9}

See similar equations:

| -5(3*-2)= | | -2n+5+5n=14 | | C=85n+4500 | | 2(3n-2)=(2n+6)+6 | | x(2x-4)+x(6x-3)=(8x+7)(x-2) | | 5*(5-2)+2*6= | | 7-4(x-1)=4x-3 | | x(2x-2)+x(3x-3)=(5x+9)(x-7) | | 7x^2-28x+1=0 | | C-21=47 | | -2X+-8+-8=4 | | 0.8x=400x+400.5 | | 3/2(4x-3)+1/4=1 | | 15=-3(2x-1) | | 4(x-5)=2(x+3) | | -p+3y+10=2p-2 | | 2x-3-8=0 | | 81x=63x+72 | | m+m+2=18 | | -3(1-4x)=2x-3 | | 8x-5-4x=x+5+x | | -4(1-3x)+3x=3x-16 | | -4(t-3)+9t=8t-9 | | -6a+18-12a-30-3a+6=0 | | 7(x-8)-8(x-7)=x+1-(x-8) | | 8(m+4)=6m+20 | | (3x+8)=5x-20 | | 5.4x+13=12 | | x/5=x/8+7/5 | | 1.7q-4.1-5.9q=-5.2q-3.4 | | 9(x-3)+28=8(x+3) | | x-(-3+5x)+5=-6+(5x-4) |

Equations solver categories