7t^2+21t-70=0

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Solution for 7t^2+21t-70=0 equation:


Simplifying
7t2 + 21t + -70 = 0

Reorder the terms:
-70 + 21t + 7t2 = 0

Solving
-70 + 21t + 7t2 = 0

Solving for variable 't'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-10 + 3t + t2) = 0

Factor a trinomial.
7((-5 + -1t)(2 + -1t)) = 0

Ignore the factor 7.

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 '(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 = {-5, 2}

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