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Simplifying 3.675 = -4.9s2 + 9.8s + 0 Reorder the terms: 3.675 = 0 + 9.8s + -4.9s2 Remove the zero: 3.675 = 9.8s + -4.9s2 Solving 3.675 = 9.8s + -4.9s2 Solving for variable 's'. Reorder the terms: 3.675 + -9.8s + 4.9s2 = 9.8s + -9.8s + -4.9s2 + 4.9s2 Combine like terms: 9.8s + -9.8s = 0.0 3.675 + -9.8s + 4.9s2 = 0.0 + -4.9s2 + 4.9s2 3.675 + -9.8s + 4.9s2 = -4.9s2 + 4.9s2 Combine like terms: -4.9s2 + 4.9s2 = 0.0 3.675 + -9.8s + 4.9s2 = 0.0 Begin completing the square. Divide all terms by 4.9 the coefficient of the squared term: Divide each side by '4.9'. 0.75 + -2s + s2 = 0 Move the constant term to the right: Add '-0.75' to each side of the equation. 0.75 + -2s + -0.75 + s2 = 0 + -0.75 Reorder the terms: 0.75 + -0.75 + -2s + s2 = 0 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + -2s + s2 = 0 + -0.75 -2s + s2 = 0 + -0.75 Combine like terms: 0 + -0.75 = -0.75 -2s + s2 = -0.75 The s term is -2s. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2s + 1 + s2 = -0.75 + 1 Reorder the terms: 1 + -2s + s2 = -0.75 + 1 Combine like terms: -0.75 + 1 = 0.25 1 + -2s + s2 = 0.25 Factor a perfect square on the left side: (s + -1)(s + -1) = 0.25 Calculate the square root of the right side: 0.5 Break this problem into two subproblems by setting (s + -1) equal to 0.5 and -0.5.Subproblem 1
s + -1 = 0.5 Simplifying s + -1 = 0.5 Reorder the terms: -1 + s = 0.5 Solving -1 + s = 0.5 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + s = 0.5 + 1 Combine like terms: -1 + 1 = 0 0 + s = 0.5 + 1 s = 0.5 + 1 Combine like terms: 0.5 + 1 = 1.5 s = 1.5 Simplifying s = 1.5Subproblem 2
s + -1 = -0.5 Simplifying s + -1 = -0.5 Reorder the terms: -1 + s = -0.5 Solving -1 + s = -0.5 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + s = -0.5 + 1 Combine like terms: -1 + 1 = 0 0 + s = -0.5 + 1 s = -0.5 + 1 Combine like terms: -0.5 + 1 = 0.5 s = 0.5 Simplifying s = 0.5Solution
The solution to the problem is based on the solutions from the subproblems. s = {1.5, 0.5}
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