80a^4-120a^2+45=

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Solution for 80a^4-120a^2+45= equation:


Simplifying
80a4 + -120a2 + 45 = 0

Reorder the terms:
45 + -120a2 + 80a4 = 0

Solving
45 + -120a2 + 80a4 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '5'.
5(9 + -24a2 + 16a4) = 0

Factor a trinomial.
5((3 + -4a2)(3 + -4a2)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(3 + -4a2)' equal to zero and attempt to solve: Simplifying 3 + -4a2 = 0 Solving 3 + -4a2 = 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 + -4a2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4a2 = 0 + -3 -4a2 = 0 + -3 Combine like terms: 0 + -3 = -3 -4a2 = -3 Divide each side by '-4'. a2 = 0.75 Simplifying a2 = 0.75 Take the square root of each side: a = {-0.866025404, 0.866025404}

Subproblem 2

Set the factor '(3 + -4a2)' equal to zero and attempt to solve: Simplifying 3 + -4a2 = 0 Solving 3 + -4a2 = 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 + -4a2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4a2 = 0 + -3 -4a2 = 0 + -3 Combine like terms: 0 + -3 = -3 -4a2 = -3 Divide each side by '-4'. a2 = 0.75 Simplifying a2 = 0.75 Take the square root of each side: a = {-0.866025404, 0.866025404}

Solution

a = {-0.866025404, 0.866025404, -0.866025404, 0.866025404}

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