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Simplifying 2x2 + -7x + -30 = 2 Reorder the terms: -30 + -7x + 2x2 = 2 Solving -30 + -7x + 2x2 = 2 Solving for variable 'x'. Reorder the terms: -30 + -2 + -7x + 2x2 = 2 + -2 Combine like terms: -30 + -2 = -32 -32 + -7x + 2x2 = 2 + -2 Combine like terms: 2 + -2 = 0 -32 + -7x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -16 + -3.5x + x2 = 0 Move the constant term to the right: Add '16' to each side of the equation. -16 + -3.5x + 16 + x2 = 0 + 16 Reorder the terms: -16 + 16 + -3.5x + x2 = 0 + 16 Combine like terms: -16 + 16 = 0 0 + -3.5x + x2 = 0 + 16 -3.5x + x2 = 0 + 16 Combine like terms: 0 + 16 = 16 -3.5x + x2 = 16 The x term is -3.5x. Take half its coefficient (-1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. -3.5x + 3.0625 + x2 = 16 + 3.0625 Reorder the terms: 3.0625 + -3.5x + x2 = 16 + 3.0625 Combine like terms: 16 + 3.0625 = 19.0625 3.0625 + -3.5x + x2 = 19.0625 Factor a perfect square on the left side: (x + -1.75)(x + -1.75) = 19.0625 Calculate the square root of the right side: 4.366062299 Break this problem into two subproblems by setting (x + -1.75) equal to 4.366062299 and -4.366062299.Subproblem 1
x + -1.75 = 4.366062299 Simplifying x + -1.75 = 4.366062299 Reorder the terms: -1.75 + x = 4.366062299 Solving -1.75 + x = 4.366062299 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 4.366062299 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 4.366062299 + 1.75 x = 4.366062299 + 1.75 Combine like terms: 4.366062299 + 1.75 = 6.116062299 x = 6.116062299 Simplifying x = 6.116062299Subproblem 2
x + -1.75 = -4.366062299 Simplifying x + -1.75 = -4.366062299 Reorder the terms: -1.75 + x = -4.366062299 Solving -1.75 + x = -4.366062299 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -4.366062299 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -4.366062299 + 1.75 x = -4.366062299 + 1.75 Combine like terms: -4.366062299 + 1.75 = -2.616062299 x = -2.616062299 Simplifying x = -2.616062299Solution
The solution to the problem is based on the solutions from the subproblems. x = {6.116062299, -2.616062299}
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