3c^2-33c-78=0

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Solution for 3c^2-33c-78=0 equation:


Simplifying
3c2 + -33c + -78 = 0

Reorder the terms:
-78 + -33c + 3c2 = 0

Solving
-78 + -33c + 3c2 = 0

Solving for variable 'c'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-26 + -11c + c2) = 0

Factor a trinomial.
3((-2 + -1c)(13 + -1c)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-2 + -1c)' equal to zero and attempt to solve: Simplifying -2 + -1c = 0 Solving -2 + -1c = 0 Move all terms containing c to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1c = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1c = 0 + 2 -1c = 0 + 2 Combine like terms: 0 + 2 = 2 -1c = 2 Divide each side by '-1'. c = -2 Simplifying c = -2

Subproblem 2

Set the factor '(13 + -1c)' equal to zero and attempt to solve: Simplifying 13 + -1c = 0 Solving 13 + -1c = 0 Move all terms containing c to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + -1c = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -1c = 0 + -13 -1c = 0 + -13 Combine like terms: 0 + -13 = -13 -1c = -13 Divide each side by '-1'. c = 13 Simplifying c = 13

Solution

c = {-2, 13}

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