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Simplifying (s + 2)(2s + 4) = 43.2 Reorder the terms: (2 + s)(2s + 4) = 43.2 Reorder the terms: (2 + s)(4 + 2s) = 43.2 Multiply (2 + s) * (4 + 2s) (2(4 + 2s) + s(4 + 2s)) = 43.2 ((4 * 2 + 2s * 2) + s(4 + 2s)) = 43.2 ((8 + 4s) + s(4 + 2s)) = 43.2 (8 + 4s + (4 * s + 2s * s)) = 43.2 (8 + 4s + (4s + 2s2)) = 43.2 Combine like terms: 4s + 4s = 8s (8 + 8s + 2s2) = 43.2 Solving 8 + 8s + 2s2 = 43.2 Solving for variable 's'. Reorder the terms: 8 + -43.2 + 8s + 2s2 = 43.2 + -43.2 Combine like terms: 8 + -43.2 = -35.2 -35.2 + 8s + 2s2 = 43.2 + -43.2 Combine like terms: 43.2 + -43.2 = 0.0 -35.2 + 8s + 2s2 = 0.0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -17.6 + 4s + s2 = 0.0 Move the constant term to the right: Add '17.6' to each side of the equation. -17.6 + 4s + 17.6 + s2 = 0.0 + 17.6 Reorder the terms: -17.6 + 17.6 + 4s + s2 = 0.0 + 17.6 Combine like terms: -17.6 + 17.6 = 0.0 0.0 + 4s + s2 = 0.0 + 17.6 4s + s2 = 0.0 + 17.6 Combine like terms: 0.0 + 17.6 = 17.6 4s + s2 = 17.6 The s term is 4s. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4s + 4 + s2 = 17.6 + 4 Reorder the terms: 4 + 4s + s2 = 17.6 + 4 Combine like terms: 17.6 + 4 = 21.6 4 + 4s + s2 = 21.6 Factor a perfect square on the left side: (s + 2)(s + 2) = 21.6 Calculate the square root of the right side: 4.647580015 Break this problem into two subproblems by setting (s + 2) equal to 4.647580015 and -4.647580015.Subproblem 1
s + 2 = 4.647580015 Simplifying s + 2 = 4.647580015 Reorder the terms: 2 + s = 4.647580015 Solving 2 + s = 4.647580015 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + s = 4.647580015 + -2 Combine like terms: 2 + -2 = 0 0 + s = 4.647580015 + -2 s = 4.647580015 + -2 Combine like terms: 4.647580015 + -2 = 2.647580015 s = 2.647580015 Simplifying s = 2.647580015Subproblem 2
s + 2 = -4.647580015 Simplifying s + 2 = -4.647580015 Reorder the terms: 2 + s = -4.647580015 Solving 2 + s = -4.647580015 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + s = -4.647580015 + -2 Combine like terms: 2 + -2 = 0 0 + s = -4.647580015 + -2 s = -4.647580015 + -2 Combine like terms: -4.647580015 + -2 = -6.647580015 s = -6.647580015 Simplifying s = -6.647580015Solution
The solution to the problem is based on the solutions from the subproblems. s = {2.647580015, -6.647580015}
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