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Simplifying -4x2 = 8x + -3 Reorder the terms: -4x2 = -3 + 8x Solving -4x2 = -3 + 8x Solving for variable 'x'. Reorder the terms: 3 + -8x + -4x2 = -3 + 8x + 3 + -8x Reorder the terms: 3 + -8x + -4x2 = -3 + 3 + 8x + -8x Combine like terms: -3 + 3 = 0 3 + -8x + -4x2 = 0 + 8x + -8x 3 + -8x + -4x2 = 8x + -8x Combine like terms: 8x + -8x = 0 3 + -8x + -4x2 = 0 Begin completing the square. Divide all terms by -4 the coefficient of the squared term: Divide each side by '-4'. -0.75 + 2x + x2 = 0 Move the constant term to the right: Add '0.75' to each side of the equation. -0.75 + 2x + 0.75 + x2 = 0 + 0.75 Reorder the terms: -0.75 + 0.75 + 2x + x2 = 0 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + 2x + x2 = 0 + 0.75 2x + x2 = 0 + 0.75 Combine like terms: 0 + 0.75 = 0.75 2x + x2 = 0.75 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 0.75 + 1 Reorder the terms: 1 + 2x + x2 = 0.75 + 1 Combine like terms: 0.75 + 1 = 1.75 1 + 2x + x2 = 1.75 Factor a perfect square on the left side: (x + 1)(x + 1) = 1.75 Calculate the square root of the right side: 1.322875656 Break this problem into two subproblems by setting (x + 1) equal to 1.322875656 and -1.322875656.Subproblem 1
x + 1 = 1.322875656 Simplifying x + 1 = 1.322875656 Reorder the terms: 1 + x = 1.322875656 Solving 1 + x = 1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.322875656 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.322875656 + -1 x = 1.322875656 + -1 Combine like terms: 1.322875656 + -1 = 0.322875656 x = 0.322875656 Simplifying x = 0.322875656Subproblem 2
x + 1 = -1.322875656 Simplifying x + 1 = -1.322875656 Reorder the terms: 1 + x = -1.322875656 Solving 1 + x = -1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.322875656 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.322875656 + -1 x = -1.322875656 + -1 Combine like terms: -1.322875656 + -1 = -2.322875656 x = -2.322875656 Simplifying x = -2.322875656Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.322875656, -2.322875656}
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