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Simplifying s2 + 7s = 1 Reorder the terms: 7s + s2 = 1 Solving 7s + s2 = 1 Solving for variable 's'. Reorder the terms: -1 + 7s + s2 = 1 + -1 Combine like terms: 1 + -1 = 0 -1 + 7s + s2 = 0 Begin completing the square. Move the constant term to the right: Add '1' to each side of the equation. -1 + 7s + 1 + s2 = 0 + 1 Reorder the terms: -1 + 1 + 7s + s2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 7s + s2 = 0 + 1 7s + s2 = 0 + 1 Combine like terms: 0 + 1 = 1 7s + s2 = 1 The s term is 7s. Take half its coefficient (3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. 7s + 12.25 + s2 = 1 + 12.25 Reorder the terms: 12.25 + 7s + s2 = 1 + 12.25 Combine like terms: 1 + 12.25 = 13.25 12.25 + 7s + s2 = 13.25 Factor a perfect square on the left side: (s + 3.5)(s + 3.5) = 13.25 Calculate the square root of the right side: 3.640054945 Break this problem into two subproblems by setting (s + 3.5) equal to 3.640054945 and -3.640054945.Subproblem 1
s + 3.5 = 3.640054945 Simplifying s + 3.5 = 3.640054945 Reorder the terms: 3.5 + s = 3.640054945 Solving 3.5 + s = 3.640054945 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + s = 3.640054945 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + s = 3.640054945 + -3.5 s = 3.640054945 + -3.5 Combine like terms: 3.640054945 + -3.5 = 0.140054945 s = 0.140054945 Simplifying s = 0.140054945Subproblem 2
s + 3.5 = -3.640054945 Simplifying s + 3.5 = -3.640054945 Reorder the terms: 3.5 + s = -3.640054945 Solving 3.5 + s = -3.640054945 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + s = -3.640054945 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + s = -3.640054945 + -3.5 s = -3.640054945 + -3.5 Combine like terms: -3.640054945 + -3.5 = -7.140054945 s = -7.140054945 Simplifying s = -7.140054945Solution
The solution to the problem is based on the solutions from the subproblems. s = {0.140054945, -7.140054945}
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