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Simplifying x * x + 3x + 40 = 180 Multiply x * x x2 + 3x + 40 = 180 Reorder the terms: 40 + 3x + x2 = 180 Solving 40 + 3x + x2 = 180 Solving for variable 'x'. Reorder the terms: 40 + -180 + 3x + x2 = 180 + -180 Combine like terms: 40 + -180 = -140 -140 + 3x + x2 = 180 + -180 Combine like terms: 180 + -180 = 0 -140 + 3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '140' to each side of the equation. -140 + 3x + 140 + x2 = 0 + 140 Reorder the terms: -140 + 140 + 3x + x2 = 0 + 140 Combine like terms: -140 + 140 = 0 0 + 3x + x2 = 0 + 140 3x + x2 = 0 + 140 Combine like terms: 0 + 140 = 140 3x + x2 = 140 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = 140 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 140 + 2.25 Combine like terms: 140 + 2.25 = 142.25 2.25 + 3x + x2 = 142.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 142.25 Calculate the square root of the right side: 11.926860442 Break this problem into two subproblems by setting (x + 1.5) equal to 11.926860442 and -11.926860442.Subproblem 1
x + 1.5 = 11.926860442 Simplifying x + 1.5 = 11.926860442 Reorder the terms: 1.5 + x = 11.926860442 Solving 1.5 + x = 11.926860442 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 11.926860442 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 11.926860442 + -1.5 x = 11.926860442 + -1.5 Combine like terms: 11.926860442 + -1.5 = 10.426860442 x = 10.426860442 Simplifying x = 10.426860442Subproblem 2
x + 1.5 = -11.926860442 Simplifying x + 1.5 = -11.926860442 Reorder the terms: 1.5 + x = -11.926860442 Solving 1.5 + x = -11.926860442 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -11.926860442 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -11.926860442 + -1.5 x = -11.926860442 + -1.5 Combine like terms: -11.926860442 + -1.5 = -13.426860442 x = -13.426860442 Simplifying x = -13.426860442Solution
The solution to the problem is based on the solutions from the subproblems. x = {10.426860442, -13.426860442}
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