21s^2+43s+20=0

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Solution for 21s^2+43s+20=0 equation:


Simplifying
21s2 + 43s + 20 = 0

Reorder the terms:
20 + 43s + 21s2 = 0

Solving
20 + 43s + 21s2 = 0

Solving for variable 's'.

Factor a trinomial.
(4 + 3s)(5 + 7s) = 0

Subproblem 1

Set the factor '(4 + 3s)' equal to zero and attempt to solve: Simplifying 4 + 3s = 0 Solving 4 + 3s = 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 + 3s = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 3s = 0 + -4 3s = 0 + -4 Combine like terms: 0 + -4 = -4 3s = -4 Divide each side by '3'. s = -1.333333333 Simplifying s = -1.333333333

Subproblem 2

Set the factor '(5 + 7s)' equal to zero and attempt to solve: Simplifying 5 + 7s = 0 Solving 5 + 7s = 0 Move all terms containing s to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 7s = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 7s = 0 + -5 7s = 0 + -5 Combine like terms: 0 + -5 = -5 7s = -5 Divide each side by '7'. s = -0.7142857143 Simplifying s = -0.7142857143

Solution

s = {-1.333333333, -0.7142857143}

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