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Simplifying -2u2 + 3u + 10 = 0 Reorder the terms: 10 + 3u + -2u2 = 0 Solving 10 + 3u + -2u2 = 0 Solving for variable 'u'. Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -5 + -1.5u + u2 = 0 Move the constant term to the right: Add '5' to each side of the equation. -5 + -1.5u + 5 + u2 = 0 + 5 Reorder the terms: -5 + 5 + -1.5u + u2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1.5u + u2 = 0 + 5 -1.5u + u2 = 0 + 5 Combine like terms: 0 + 5 = 5 -1.5u + u2 = 5 The u term is -1.5u. Take half its coefficient (-0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. -1.5u + 0.5625 + u2 = 5 + 0.5625 Reorder the terms: 0.5625 + -1.5u + u2 = 5 + 0.5625 Combine like terms: 5 + 0.5625 = 5.5625 0.5625 + -1.5u + u2 = 5.5625 Factor a perfect square on the left side: (u + -0.75)(u + -0.75) = 5.5625 Calculate the square root of the right side: 2.358495283 Break this problem into two subproblems by setting (u + -0.75) equal to 2.358495283 and -2.358495283.Subproblem 1
u + -0.75 = 2.358495283 Simplifying u + -0.75 = 2.358495283 Reorder the terms: -0.75 + u = 2.358495283 Solving -0.75 + u = 2.358495283 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + u = 2.358495283 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + u = 2.358495283 + 0.75 u = 2.358495283 + 0.75 Combine like terms: 2.358495283 + 0.75 = 3.108495283 u = 3.108495283 Simplifying u = 3.108495283Subproblem 2
u + -0.75 = -2.358495283 Simplifying u + -0.75 = -2.358495283 Reorder the terms: -0.75 + u = -2.358495283 Solving -0.75 + u = -2.358495283 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + u = -2.358495283 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + u = -2.358495283 + 0.75 u = -2.358495283 + 0.75 Combine like terms: -2.358495283 + 0.75 = -1.608495283 u = -1.608495283 Simplifying u = -1.608495283Solution
The solution to the problem is based on the solutions from the subproblems. u = {3.108495283, -1.608495283}
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