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Simplifying 2x * 2x + -15x = 8 Reorder the terms for easier multiplication: 2 * 2x * x + -15x = 8 Multiply 2 * 2 4x * x + -15x = 8 Multiply x * x 4x2 + -15x = 8 Reorder the terms: -15x + 4x2 = 8 Solving -15x + 4x2 = 8 Solving for variable 'x'. Reorder the terms: -8 + -15x + 4x2 = 8 + -8 Combine like terms: 8 + -8 = 0 -8 + -15x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -2 + -3.75x + x2 = 0 Move the constant term to the right: Add '2' to each side of the equation. -2 + -3.75x + 2 + x2 = 0 + 2 Reorder the terms: -2 + 2 + -3.75x + x2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3.75x + x2 = 0 + 2 -3.75x + x2 = 0 + 2 Combine like terms: 0 + 2 = 2 -3.75x + x2 = 2 The x term is -3.75x. Take half its coefficient (-1.875). Square it (3.515625) and add it to both sides. Add '3.515625' to each side of the equation. -3.75x + 3.515625 + x2 = 2 + 3.515625 Reorder the terms: 3.515625 + -3.75x + x2 = 2 + 3.515625 Combine like terms: 2 + 3.515625 = 5.515625 3.515625 + -3.75x + x2 = 5.515625 Factor a perfect square on the left side: (x + -1.875)(x + -1.875) = 5.515625 Calculate the square root of the right side: 2.348536779 Break this problem into two subproblems by setting (x + -1.875) equal to 2.348536779 and -2.348536779.Subproblem 1
x + -1.875 = 2.348536779 Simplifying x + -1.875 = 2.348536779 Reorder the terms: -1.875 + x = 2.348536779 Solving -1.875 + x = 2.348536779 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.875' to each side of the equation. -1.875 + 1.875 + x = 2.348536779 + 1.875 Combine like terms: -1.875 + 1.875 = 0.000 0.000 + x = 2.348536779 + 1.875 x = 2.348536779 + 1.875 Combine like terms: 2.348536779 + 1.875 = 4.223536779 x = 4.223536779 Simplifying x = 4.223536779Subproblem 2
x + -1.875 = -2.348536779 Simplifying x + -1.875 = -2.348536779 Reorder the terms: -1.875 + x = -2.348536779 Solving -1.875 + x = -2.348536779 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.875' to each side of the equation. -1.875 + 1.875 + x = -2.348536779 + 1.875 Combine like terms: -1.875 + 1.875 = 0.000 0.000 + x = -2.348536779 + 1.875 x = -2.348536779 + 1.875 Combine like terms: -2.348536779 + 1.875 = -0.473536779 x = -0.473536779 Simplifying x = -0.473536779Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.223536779, -0.473536779}
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