t^4=9t^2

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Solution for t^4=9t^2 equation:


Simplifying
t4 = 9t2

Solving
t4 = 9t2

Solving for variable 't'.

Reorder the terms:
-9t2 + t4 = 9t2 + -9t2

Combine like terms: 9t2 + -9t2 = 0
-9t2 + t4 = 0

Factor out the Greatest Common Factor (GCF), 't2'.
t2(-9 + t2) = 0

Factor a difference between two squares.
t2((3 + t)(-3 + t)) = 0

Subproblem 1

Set the factor 't2' equal to zero and attempt to solve: Simplifying t2 = 0 Solving t2 = 0 Move all terms containing t to the left, all other terms to the right. Simplifying t2 = 0 Take the square root of each side: t = {0}

Subproblem 2

Set the factor '(3 + t)' equal to zero and attempt to solve: Simplifying 3 + t = 0 Solving 3 + t = 0 Move all terms containing t to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + t = 0 + -3 Combine like terms: 3 + -3 = 0 0 + t = 0 + -3 t = 0 + -3 Combine like terms: 0 + -3 = -3 t = -3 Simplifying t = -3

Subproblem 3

Set the factor '(-3 + t)' equal to zero and attempt to solve: Simplifying -3 + t = 0 Solving -3 + t = 0 Move all terms containing t to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + t = 0 + 3 Combine like terms: -3 + 3 = 0 0 + t = 0 + 3 t = 0 + 3 Combine like terms: 0 + 3 = 3 t = 3 Simplifying t = 3

Solution

t = {0, -3, 3}

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