0=-4x^4+45x^2

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Solution for 0=-4x^4+45x^2 equation:


Simplifying
0 = -4x4 + 45x2

Reorder the terms:
0 = 45x2 + -4x4

Solving
0 = 45x2 + -4x4

Solving for variable 'x'.
Remove the zero:
-45x2 + 4x4 = 45x2 + -4x4 + -45x2 + 4x4

Reorder the terms:
-45x2 + 4x4 = 45x2 + -45x2 + -4x4 + 4x4

Combine like terms: 45x2 + -45x2 = 0
-45x2 + 4x4 = 0 + -4x4 + 4x4
-45x2 + 4x4 = -4x4 + 4x4

Combine like terms: -4x4 + 4x4 = 0
-45x2 + 4x4 = 0

Factor out the Greatest Common Factor (GCF), 'x2'.
x2(-45 + 4x2) = 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 '(-45 + 4x2)' equal to zero and attempt to solve: Simplifying -45 + 4x2 = 0 Solving -45 + 4x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '45' to each side of the equation. -45 + 45 + 4x2 = 0 + 45 Combine like terms: -45 + 45 = 0 0 + 4x2 = 0 + 45 4x2 = 0 + 45 Combine like terms: 0 + 45 = 45 4x2 = 45 Divide each side by '4'. x2 = 11.25 Simplifying x2 = 11.25 Take the square root of each side: x = {-3.354101966, 3.354101966}

Solution

x = {0, -3.354101966, 3.354101966}

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