5=3t^2-9t-7

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Solution for 5=3t^2-9t-7 equation:


Simplifying
5 = 3t2 + -9t + -7

Reorder the terms:
5 = -7 + -9t + 3t2

Solving
5 = -7 + -9t + 3t2

Solving for variable 't'.

Combine like terms: 5 + 7 = 12
12 + 9t + -3t2 = -7 + -9t + 3t2 + 7 + 9t + -3t2

Reorder the terms:
12 + 9t + -3t2 = -7 + 7 + -9t + 9t + 3t2 + -3t2

Combine like terms: -7 + 7 = 0
12 + 9t + -3t2 = 0 + -9t + 9t + 3t2 + -3t2
12 + 9t + -3t2 = -9t + 9t + 3t2 + -3t2

Combine like terms: -9t + 9t = 0
12 + 9t + -3t2 = 0 + 3t2 + -3t2
12 + 9t + -3t2 = 3t2 + -3t2

Combine like terms: 3t2 + -3t2 = 0
12 + 9t + -3t2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(4 + 3t + -1t2) = 0

Factor a trinomial.
3((4 + -1t)(1 + t)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(4 + -1t)' equal to zero and attempt to solve: Simplifying 4 + -1t = 0 Solving 4 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1t = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1t = 0 + -4 -1t = 0 + -4 Combine like terms: 0 + -4 = -4 -1t = -4 Divide each side by '-1'. t = 4 Simplifying t = 4

Subproblem 2

Set the factor '(1 + t)' equal to zero and attempt to solve: Simplifying 1 + t = 0 Solving 1 + t = 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 + t = 0 + -1 Combine like terms: 1 + -1 = 0 0 + t = 0 + -1 t = 0 + -1 Combine like terms: 0 + -1 = -1 t = -1 Simplifying t = -1

Solution

t = {4, -1}

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