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Simplifying x2 + 3x + -10 = 7 Reorder the terms: -10 + 3x + x2 = 7 Solving -10 + 3x + x2 = 7 Solving for variable 'x'. Reorder the terms: -10 + -7 + 3x + x2 = 7 + -7 Combine like terms: -10 + -7 = -17 -17 + 3x + x2 = 7 + -7 Combine like terms: 7 + -7 = 0 -17 + 3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '17' to each side of the equation. -17 + 3x + 17 + x2 = 0 + 17 Reorder the terms: -17 + 17 + 3x + x2 = 0 + 17 Combine like terms: -17 + 17 = 0 0 + 3x + x2 = 0 + 17 3x + x2 = 0 + 17 Combine like terms: 0 + 17 = 17 3x + x2 = 17 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 = 17 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 17 + 2.25 Combine like terms: 17 + 2.25 = 19.25 2.25 + 3x + x2 = 19.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 19.25 Calculate the square root of the right side: 4.387482194 Break this problem into two subproblems by setting (x + 1.5) equal to 4.387482194 and -4.387482194.Subproblem 1
x + 1.5 = 4.387482194 Simplifying x + 1.5 = 4.387482194 Reorder the terms: 1.5 + x = 4.387482194 Solving 1.5 + x = 4.387482194 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 = 4.387482194 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 4.387482194 + -1.5 x = 4.387482194 + -1.5 Combine like terms: 4.387482194 + -1.5 = 2.887482194 x = 2.887482194 Simplifying x = 2.887482194Subproblem 2
x + 1.5 = -4.387482194 Simplifying x + 1.5 = -4.387482194 Reorder the terms: 1.5 + x = -4.387482194 Solving 1.5 + x = -4.387482194 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 = -4.387482194 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -4.387482194 + -1.5 x = -4.387482194 + -1.5 Combine like terms: -4.387482194 + -1.5 = -5.887482194 x = -5.887482194 Simplifying x = -5.887482194Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.887482194, -5.887482194}
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