5=2t^2-21t+45

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Solution for 5=2t^2-21t+45 equation:


Simplifying
5 = 2t2 + -21t + 45

Reorder the terms:
5 = 45 + -21t + 2t2

Solving
5 = 45 + -21t + 2t2

Solving for variable 't'.

Combine like terms: 5 + -45 = -40
-40 + 21t + -2t2 = 45 + -21t + 2t2 + -45 + 21t + -2t2

Reorder the terms:
-40 + 21t + -2t2 = 45 + -45 + -21t + 21t + 2t2 + -2t2

Combine like terms: 45 + -45 = 0
-40 + 21t + -2t2 = 0 + -21t + 21t + 2t2 + -2t2
-40 + 21t + -2t2 = -21t + 21t + 2t2 + -2t2

Combine like terms: -21t + 21t = 0
-40 + 21t + -2t2 = 0 + 2t2 + -2t2
-40 + 21t + -2t2 = 2t2 + -2t2

Combine like terms: 2t2 + -2t2 = 0
-40 + 21t + -2t2 = 0

Factor a trinomial.
(-8 + t)(5 + -2t) = 0

Subproblem 1

Set the factor '(-8 + t)' equal to zero and attempt to solve: Simplifying -8 + t = 0 Solving -8 + t = 0 Move all terms containing t to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + t = 0 + 8 Combine like terms: -8 + 8 = 0 0 + t = 0 + 8 t = 0 + 8 Combine like terms: 0 + 8 = 8 t = 8 Simplifying t = 8

Subproblem 2

Set the factor '(5 + -2t)' equal to zero and attempt to solve: Simplifying 5 + -2t = 0 Solving 5 + -2t = 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 + -2t = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2t = 0 + -5 -2t = 0 + -5 Combine like terms: 0 + -5 = -5 -2t = -5 Divide each side by '-2'. t = 2.5 Simplifying t = 2.5

Solution

t = {8, 2.5}

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