81s^2+72s=-16

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Solution for 81s^2+72s=-16 equation:


Simplifying
81s2 + 72s = -16

Reorder the terms:
72s + 81s2 = -16

Solving
72s + 81s2 = -16

Solving for variable 's'.

Reorder the terms:
16 + 72s + 81s2 = -16 + 16

Combine like terms: -16 + 16 = 0
16 + 72s + 81s2 = 0

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

Subproblem 1

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

Subproblem 2

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

Solution

s = {-0.4444444444, -0.4444444444}

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