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Simplifying s2 + 10s + 20 = 0 Reorder the terms: 20 + 10s + s2 = 0 Solving 20 + 10s + s2 = 0 Solving for variable 's'. Begin completing the square. Move the constant term to the right: Add '-20' to each side of the equation. 20 + 10s + -20 + s2 = 0 + -20 Reorder the terms: 20 + -20 + 10s + s2 = 0 + -20 Combine like terms: 20 + -20 = 0 0 + 10s + s2 = 0 + -20 10s + s2 = 0 + -20 Combine like terms: 0 + -20 = -20 10s + s2 = -20 The s term is 10s. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10s + 25 + s2 = -20 + 25 Reorder the terms: 25 + 10s + s2 = -20 + 25 Combine like terms: -20 + 25 = 5 25 + 10s + s2 = 5 Factor a perfect square on the left side: (s + 5)(s + 5) = 5 Calculate the square root of the right side: 2.236067978 Break this problem into two subproblems by setting (s + 5) equal to 2.236067978 and -2.236067978.Subproblem 1
s + 5 = 2.236067978 Simplifying s + 5 = 2.236067978 Reorder the terms: 5 + s = 2.236067978 Solving 5 + s = 2.236067978 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + s = 2.236067978 + -5 Combine like terms: 5 + -5 = 0 0 + s = 2.236067978 + -5 s = 2.236067978 + -5 Combine like terms: 2.236067978 + -5 = -2.763932022 s = -2.763932022 Simplifying s = -2.763932022Subproblem 2
s + 5 = -2.236067978 Simplifying s + 5 = -2.236067978 Reorder the terms: 5 + s = -2.236067978 Solving 5 + s = -2.236067978 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + s = -2.236067978 + -5 Combine like terms: 5 + -5 = 0 0 + s = -2.236067978 + -5 s = -2.236067978 + -5 Combine like terms: -2.236067978 + -5 = -7.236067978 s = -7.236067978 Simplifying s = -7.236067978Solution
The solution to the problem is based on the solutions from the subproblems. s = {-2.763932022, -7.236067978}
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