16s^2+72s=-81

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


Simplifying
16s2 + 72s = -81

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

Solving
72s + 16s2 = -81

Solving for variable 's'.

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

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

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

Subproblem 1

Set the factor '(9 + 4s)' equal to zero and attempt to solve: Simplifying 9 + 4s = 0 Solving 9 + 4s = 0 Move all terms containing s to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 4s = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 4s = 0 + -9 4s = 0 + -9 Combine like terms: 0 + -9 = -9 4s = -9 Divide each side by '4'. s = -2.25 Simplifying s = -2.25

Subproblem 2

Set the factor '(9 + 4s)' equal to zero and attempt to solve: Simplifying 9 + 4s = 0 Solving 9 + 4s = 0 Move all terms containing s to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 4s = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 4s = 0 + -9 4s = 0 + -9 Combine like terms: 0 + -9 = -9 4s = -9 Divide each side by '4'. s = -2.25 Simplifying s = -2.25

Solution

s = {-2.25, -2.25}

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