0=-16t^2+72t-45

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Solution for 0=-16t^2+72t-45 equation:


Simplifying
0 = -16t2 + 72t + -45

Reorder the terms:
0 = -45 + 72t + -16t2

Solving
0 = -45 + 72t + -16t2

Solving for variable 't'.

Combine like terms: 0 + 45 = 45
45 + -72t + 16t2 = -45 + 72t + -16t2 + 45 + -72t + 16t2

Reorder the terms:
45 + -72t + 16t2 = -45 + 45 + 72t + -72t + -16t2 + 16t2

Combine like terms: -45 + 45 = 0
45 + -72t + 16t2 = 0 + 72t + -72t + -16t2 + 16t2
45 + -72t + 16t2 = 72t + -72t + -16t2 + 16t2

Combine like terms: 72t + -72t = 0
45 + -72t + 16t2 = 0 + -16t2 + 16t2
45 + -72t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
45 + -72t + 16t2 = 0

Factor a trinomial.
(3 + -4t)(15 + -4t) = 0

Subproblem 1

Set the factor '(3 + -4t)' equal to zero and attempt to solve: Simplifying 3 + -4t = 0 Solving 3 + -4t = 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 + -4t = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4t = 0 + -3 -4t = 0 + -3 Combine like terms: 0 + -3 = -3 -4t = -3 Divide each side by '-4'. t = 0.75 Simplifying t = 0.75

Subproblem 2

Set the factor '(15 + -4t)' equal to zero and attempt to solve: Simplifying 15 + -4t = 0 Solving 15 + -4t = 0 Move all terms containing t to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -4t = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -4t = 0 + -15 -4t = 0 + -15 Combine like terms: 0 + -15 = -15 -4t = -15 Divide each side by '-4'. t = 3.75 Simplifying t = 3.75

Solution

t = {0.75, 3.75}

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