(-15t^2)+135t-210=0

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Solution for (-15t^2)+135t-210=0 equation:


Simplifying
(-15t2) + 135t + -210 = 0

Reorder the terms:
-210 + 135t + (-15t2) = 0

Solving
-210 + 135t + (-15t2) = 0

Solving for variable 't'.

Factor out the Greatest Common Factor (GCF), '15'.
15(-14 + 9t + (-1t2)) = 0

Factor a trinomial.
15((-7 + t)(2 + -1t)) = 0

Ignore the factor 15.

Subproblem 1

Set the factor '(-7 + t)' equal to zero and attempt to solve: Simplifying -7 + t = 0 Solving -7 + t = 0 Move all terms containing t to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + t = 0 + 7 Combine like terms: -7 + 7 = 0 0 + t = 0 + 7 t = 0 + 7 Combine like terms: 0 + 7 = 7 t = 7 Simplifying t = 7

Subproblem 2

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

Solution

t = {7, 2}

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