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Simplifying 2s2 + -5s + -2 = 0 Reorder the terms: -2 + -5s + 2s2 = 0 Solving -2 + -5s + 2s2 = 0 Solving for variable 's'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -1 + -2.5s + s2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + -2.5s + 1 + s2 = 0 + 1 Reorder the terms: -1 + 1 + -2.5s + s2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2.5s + s2 = 0 + 1 -2.5s + s2 = 0 + 1 Combine like terms: 0 + 1 = 1 -2.5s + s2 = 1 The s term is -2.5s. Take half its coefficient (-1.25). Square it (1.5625) and add it to both sides. Add '1.5625' to each side of the equation. -2.5s + 1.5625 + s2 = 1 + 1.5625 Reorder the terms: 1.5625 + -2.5s + s2 = 1 + 1.5625 Combine like terms: 1 + 1.5625 = 2.5625 1.5625 + -2.5s + s2 = 2.5625 Factor a perfect square on the left side: (s + -1.25)(s + -1.25) = 2.5625 Calculate the square root of the right side: 1.600781059 Break this problem into two subproblems by setting (s + -1.25) equal to 1.600781059 and -1.600781059.Subproblem 1
s + -1.25 = 1.600781059 Simplifying s + -1.25 = 1.600781059 Reorder the terms: -1.25 + s = 1.600781059 Solving -1.25 + s = 1.600781059 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + s = 1.600781059 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + s = 1.600781059 + 1.25 s = 1.600781059 + 1.25 Combine like terms: 1.600781059 + 1.25 = 2.850781059 s = 2.850781059 Simplifying s = 2.850781059Subproblem 2
s + -1.25 = -1.600781059 Simplifying s + -1.25 = -1.600781059 Reorder the terms: -1.25 + s = -1.600781059 Solving -1.25 + s = -1.600781059 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + s = -1.600781059 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + s = -1.600781059 + 1.25 s = -1.600781059 + 1.25 Combine like terms: -1.600781059 + 1.25 = -0.350781059 s = -0.350781059 Simplifying s = -0.350781059Solution
The solution to the problem is based on the solutions from the subproblems. s = {2.850781059, -0.350781059}
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