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Simplifying 2x2 + -7x + -36 = 0 Reorder the terms: -36 + -7x + 2x2 = 0 Solving -36 + -7x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -18 + -3.5x + x2 = 0 Move the constant term to the right: Add '18' to each side of the equation. -18 + -3.5x + 18 + x2 = 0 + 18 Reorder the terms: -18 + 18 + -3.5x + x2 = 0 + 18 Combine like terms: -18 + 18 = 0 0 + -3.5x + x2 = 0 + 18 -3.5x + x2 = 0 + 18 Combine like terms: 0 + 18 = 18 -3.5x + x2 = 18 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 = 18 + 3.0625 Reorder the terms: 3.0625 + -3.5x + x2 = 18 + 3.0625 Combine like terms: 18 + 3.0625 = 21.0625 3.0625 + -3.5x + x2 = 21.0625 Factor a perfect square on the left side: (x + -1.75)(x + -1.75) = 21.0625 Calculate the square root of the right side: 4.589389938 Break this problem into two subproblems by setting (x + -1.75) equal to 4.589389938 and -4.589389938.Subproblem 1
x + -1.75 = 4.589389938 Simplifying x + -1.75 = 4.589389938 Reorder the terms: -1.75 + x = 4.589389938 Solving -1.75 + x = 4.589389938 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 = 4.589389938 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 4.589389938 + 1.75 x = 4.589389938 + 1.75 Combine like terms: 4.589389938 + 1.75 = 6.339389938 x = 6.339389938 Simplifying x = 6.339389938Subproblem 2
x + -1.75 = -4.589389938 Simplifying x + -1.75 = -4.589389938 Reorder the terms: -1.75 + x = -4.589389938 Solving -1.75 + x = -4.589389938 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 = -4.589389938 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -4.589389938 + 1.75 x = -4.589389938 + 1.75 Combine like terms: -4.589389938 + 1.75 = -2.839389938 x = -2.839389938 Simplifying x = -2.839389938Solution
The solution to the problem is based on the solutions from the subproblems. x = {6.339389938, -2.839389938}
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