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Simplifying 2x2 + -7x + -15 = 10 + -4x Reorder the terms: -15 + -7x + 2x2 = 10 + -4x Solving -15 + -7x + 2x2 = 10 + -4x Solving for variable 'x'. Reorder the terms: -15 + -10 + -7x + 4x + 2x2 = 10 + -4x + -10 + 4x Combine like terms: -15 + -10 = -25 -25 + -7x + 4x + 2x2 = 10 + -4x + -10 + 4x Combine like terms: -7x + 4x = -3x -25 + -3x + 2x2 = 10 + -4x + -10 + 4x Reorder the terms: -25 + -3x + 2x2 = 10 + -10 + -4x + 4x Combine like terms: 10 + -10 = 0 -25 + -3x + 2x2 = 0 + -4x + 4x -25 + -3x + 2x2 = -4x + 4x Combine like terms: -4x + 4x = 0 -25 + -3x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -12.5 + -1.5x + x2 = 0 Move the constant term to the right: Add '12.5' to each side of the equation. -12.5 + -1.5x + 12.5 + x2 = 0 + 12.5 Reorder the terms: -12.5 + 12.5 + -1.5x + x2 = 0 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + -1.5x + x2 = 0 + 12.5 -1.5x + x2 = 0 + 12.5 Combine like terms: 0 + 12.5 = 12.5 -1.5x + x2 = 12.5 The x term is -1.5x. 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. -1.5x + 0.5625 + x2 = 12.5 + 0.5625 Reorder the terms: 0.5625 + -1.5x + x2 = 12.5 + 0.5625 Combine like terms: 12.5 + 0.5625 = 13.0625 0.5625 + -1.5x + x2 = 13.0625 Factor a perfect square on the left side: (x + -0.75)(x + -0.75) = 13.0625 Calculate the square root of the right side: 3.614208074 Break this problem into two subproblems by setting (x + -0.75) equal to 3.614208074 and -3.614208074.Subproblem 1
x + -0.75 = 3.614208074 Simplifying x + -0.75 = 3.614208074 Reorder the terms: -0.75 + x = 3.614208074 Solving -0.75 + x = 3.614208074 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 3.614208074 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 3.614208074 + 0.75 x = 3.614208074 + 0.75 Combine like terms: 3.614208074 + 0.75 = 4.364208074 x = 4.364208074 Simplifying x = 4.364208074Subproblem 2
x + -0.75 = -3.614208074 Simplifying x + -0.75 = -3.614208074 Reorder the terms: -0.75 + x = -3.614208074 Solving -0.75 + x = -3.614208074 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -3.614208074 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -3.614208074 + 0.75 x = -3.614208074 + 0.75 Combine like terms: -3.614208074 + 0.75 = -2.864208074 x = -2.864208074 Simplifying x = -2.864208074Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.364208074, -2.864208074}
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