x^4=9x^2

Simple and best practice solution for x^4=9x^2 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^4=9x^2 equation:


Simplifying
x4 = 9x2

Solving
x4 = 9x2

Solving for variable 'x'.

Reorder the terms:
-9x2 + x4 = 9x2 + -9x2

Combine like terms: 9x2 + -9x2 = 0
-9x2 + x4 = 0

Factor out the Greatest Common Factor (GCF), 'x2'.
x2(-9 + x2) = 0

Factor a difference between two squares.
x2((3 + x)(-3 + x)) = 0

Subproblem 1

Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}

Subproblem 2

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

Subproblem 3

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

Solution

x = {0, -3, 3}

See similar equations:

| t^2+2t+a=0 | | 3(2x-4)=2(6+4x) | | -2x^2+6x=0 | | 5/6*5/6= | | -6w+14=-w+14-5w | | x^2+25-10x=0 | | (x+5)(x-3)(2x-14)=0 | | 5/6= | | 7a-10=7a-35 | | 3x-5(x-7)=10x+2 | | 35+7x=11+11x | | 27z^3-8=0 | | 11=25+7y | | -3a=19 | | 80=1w(2) | | 11m-2=31 | | 5(x+11)= | | 90k-4+20-10k= | | 15G-z=W | | 2a+1=81 | | 5x(3x-12)= | | x(x-3)=-7 | | 3x+4[2x-(5x+9)]= | | 2(5r+20)=8(r+5)+2r | | 4sin^2(x)=5-4cosx | | 6(3x-2)-14x=-12 | | 4sin^2x=5-4cosx | | s^2+5s=36 | | 7y-7=14y+7 | | 3z+4z=6z-6 | | 6x-(3x-8)=35 | | (1-w)(3w-7)= |

Equations solver categories