c^2-9c=-8

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Solution for c^2-9c=-8 equation:


Simplifying
c2 + -9c = -8

Reorder the terms:
-9c + c2 = -8

Solving
-9c + c2 = -8

Solving for variable 'c'.

Reorder the terms:
8 + -9c + c2 = -8 + 8

Combine like terms: -8 + 8 = 0
8 + -9c + c2 = 0

Factor a trinomial.
(1 + -1c)(8 + -1c) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(8 + -1c)' equal to zero and attempt to solve: Simplifying 8 + -1c = 0 Solving 8 + -1c = 0 Move all terms containing c to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1c = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1c = 0 + -8 -1c = 0 + -8 Combine like terms: 0 + -8 = -8 -1c = -8 Divide each side by '-1'. c = 8 Simplifying c = 8

Solution

c = {1, 8}

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