81c^2+72c+16=0

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Solution for 81c^2+72c+16=0 equation:


Simplifying
81c2 + 72c + 16 = 0

Reorder the terms:
16 + 72c + 81c2 = 0

Solving
16 + 72c + 81c2 = 0

Solving for variable 'c'.

Factor a trinomial.
(4 + 9c)(4 + 9c) = 0

Subproblem 1

Set the factor '(4 + 9c)' equal to zero and attempt to solve: Simplifying 4 + 9c = 0 Solving 4 + 9c = 0 Move all terms containing c to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 9c = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 9c = 0 + -4 9c = 0 + -4 Combine like terms: 0 + -4 = -4 9c = -4 Divide each side by '9'. c = -0.4444444444 Simplifying c = -0.4444444444

Subproblem 2

Set the factor '(4 + 9c)' equal to zero and attempt to solve: Simplifying 4 + 9c = 0 Solving 4 + 9c = 0 Move all terms containing c to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 9c = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 9c = 0 + -4 9c = 0 + -4 Combine like terms: 0 + -4 = -4 9c = -4 Divide each side by '9'. c = -0.4444444444 Simplifying c = -0.4444444444

Solution

c = {-0.4444444444, -0.4444444444}

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