0=-5t^2+5t+30

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Solution for 0=-5t^2+5t+30 equation:


Simplifying
0 = -5t2 + 5t + 30

Reorder the terms:
0 = 30 + 5t + -5t2

Solving
0 = 30 + 5t + -5t2

Solving for variable 't'.

Combine like terms: 0 + -30 = -30
-30 + -5t + 5t2 = 30 + 5t + -5t2 + -30 + -5t + 5t2

Reorder the terms:
-30 + -5t + 5t2 = 30 + -30 + 5t + -5t + -5t2 + 5t2

Combine like terms: 30 + -30 = 0
-30 + -5t + 5t2 = 0 + 5t + -5t + -5t2 + 5t2
-30 + -5t + 5t2 = 5t + -5t + -5t2 + 5t2

Combine like terms: 5t + -5t = 0
-30 + -5t + 5t2 = 0 + -5t2 + 5t2
-30 + -5t + 5t2 = -5t2 + 5t2

Combine like terms: -5t2 + 5t2 = 0
-30 + -5t + 5t2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(-6 + -1t + t2) = 0

Factor a trinomial.
5((-2 + -1t)(3 + -1t)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-2 + -1t)' equal to zero and attempt to solve: Simplifying -2 + -1t = 0 Solving -2 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1t = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1t = 0 + 2 -1t = 0 + 2 Combine like terms: 0 + 2 = 2 -1t = 2 Divide each side by '-1'. t = -2 Simplifying t = -2

Subproblem 2

Set the factor '(3 + -1t)' equal to zero and attempt to solve: Simplifying 3 + -1t = 0 Solving 3 + -1t = 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 + -1t = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1t = 0 + -3 -1t = 0 + -3 Combine like terms: 0 + -3 = -3 -1t = -3 Divide each side by '-1'. t = 3 Simplifying t = 3

Solution

t = {-2, 3}

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