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Simplifying 2s2 + s = 30 Reorder the terms: s + 2s2 = 30 Solving s + 2s2 = 30 Solving for variable 's'. Reorder the terms: -30 + s + 2s2 = 30 + -30 Combine like terms: 30 + -30 = 0 -30 + s + 2s2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -15 + 0.5s + s2 = 0 Move the constant term to the right: Add '15' to each side of the equation. -15 + 0.5s + 15 + s2 = 0 + 15 Reorder the terms: -15 + 15 + 0.5s + s2 = 0 + 15 Combine like terms: -15 + 15 = 0 0 + 0.5s + s2 = 0 + 15 0.5s + s2 = 0 + 15 Combine like terms: 0 + 15 = 15 0.5s + s2 = 15 The s term is s. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.5s + 0.25 + s2 = 15 + 0.25 Reorder the terms: 0.25 + 0.5s + s2 = 15 + 0.25 Combine like terms: 15 + 0.25 = 15.25 0.25 + 0.5s + s2 = 15.25 Factor a perfect square on the left side: (s + 0.5)(s + 0.5) = 15.25 Calculate the square root of the right side: 3.905124838 Break this problem into two subproblems by setting (s + 0.5) equal to 3.905124838 and -3.905124838.Subproblem 1
s + 0.5 = 3.905124838 Simplifying s + 0.5 = 3.905124838 Reorder the terms: 0.5 + s = 3.905124838 Solving 0.5 + s = 3.905124838 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + s = 3.905124838 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + s = 3.905124838 + -0.5 s = 3.905124838 + -0.5 Combine like terms: 3.905124838 + -0.5 = 3.405124838 s = 3.405124838 Simplifying s = 3.405124838Subproblem 2
s + 0.5 = -3.905124838 Simplifying s + 0.5 = -3.905124838 Reorder the terms: 0.5 + s = -3.905124838 Solving 0.5 + s = -3.905124838 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + s = -3.905124838 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + s = -3.905124838 + -0.5 s = -3.905124838 + -0.5 Combine like terms: -3.905124838 + -0.5 = -4.405124838 s = -4.405124838 Simplifying s = -4.405124838Solution
The solution to the problem is based on the solutions from the subproblems. s = {3.405124838, -4.405124838}
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