7c^2-91c+210=0

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Solution for 7c^2-91c+210=0 equation:


Simplifying
7c2 + -91c + 210 = 0

Reorder the terms:
210 + -91c + 7c2 = 0

Solving
210 + -91c + 7c2 = 0

Solving for variable 'c'.

Factor out the Greatest Common Factor (GCF), '7'.
7(30 + -13c + c2) = 0

Factor a trinomial.
7((3 + -1c)(10 + -1c)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(3 + -1c)' equal to zero and attempt to solve: Simplifying 3 + -1c = 0 Solving 3 + -1c = 0 Move all terms containing c to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1c = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1c = 0 + -3 -1c = 0 + -3 Combine like terms: 0 + -3 = -3 -1c = -3 Divide each side by '-1'. c = 3 Simplifying c = 3

Subproblem 2

Set the factor '(10 + -1c)' equal to zero and attempt to solve: Simplifying 10 + -1c = 0 Solving 10 + -1c = 0 Move all terms containing c to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1c = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1c = 0 + -10 -1c = 0 + -10 Combine like terms: 0 + -10 = -10 -1c = -10 Divide each side by '-1'. c = 10 Simplifying c = 10

Solution

c = {3, 10}

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