(t^4)-(4t^3)-(5t^2)=0

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Solution for (t^4)-(4t^3)-(5t^2)=0 equation:


Simplifying
(t4) + -1(4t3) + -1(5t2) = 0
t4 + -1(4t3) + -1(5t2) = 0

Remove parenthesis around (4t3)
t4 + -1 * 4t3 + -1(5t2) = 0

Multiply -1 * 4
t4 + -4t3 + -1(5t2) = 0

Remove parenthesis around (5t2)
t4 + -4t3 + -1 * 5t2 = 0

Multiply -1 * 5
t4 + -4t3 + -5t2 = 0

Reorder the terms:
-5t2 + -4t3 + t4 = 0

Solving
-5t2 + -4t3 + t4 = 0

Solving for variable 't'.

Factor out the Greatest Common Factor (GCF), 't2'.
t2(-5 + -4t + t2) = 0

Factor a trinomial.
t2((-1 + -1t)(5 + -1t)) = 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 '(-1 + -1t)' equal to zero and attempt to solve: Simplifying -1 + -1t = 0 Solving -1 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -1t = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1t = 0 + 1 -1t = 0 + 1 Combine like terms: 0 + 1 = 1 -1t = 1 Divide each side by '-1'. t = -1 Simplifying t = -1

Subproblem 3

Set the factor '(5 + -1t)' equal to zero and attempt to solve: Simplifying 5 + -1t = 0 Solving 5 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1t = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1t = 0 + -5 -1t = 0 + -5 Combine like terms: 0 + -5 = -5 -1t = -5 Divide each side by '-1'. t = 5 Simplifying t = 5

Solution

t = {0, -1, 5}

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