t(t-4)=45

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Solution for t(t-4)=45 equation:


Simplifying
t(t + -4) = 45

Reorder the terms:
t(-4 + t) = 45
(-4 * t + t * t) = 45
(-4t + t2) = 45

Solving
-4t + t2 = 45

Solving for variable 't'.

Reorder the terms:
-45 + -4t + t2 = 45 + -45

Combine like terms: 45 + -45 = 0
-45 + -4t + t2 = 0

Factor a trinomial.
(-5 + -1t)(9 + -1t) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(9 + -1t)' equal to zero and attempt to solve: Simplifying 9 + -1t = 0 Solving 9 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1t = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1t = 0 + -9 -1t = 0 + -9 Combine like terms: 0 + -9 = -9 -1t = -9 Divide each side by '-1'. t = 9 Simplifying t = 9

Solution

t = {-5, 9}

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