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Simplifying 4x2 + 1 = 16 + 8x Reorder the terms: 1 + 4x2 = 16 + 8x Solving 1 + 4x2 = 16 + 8x Solving for variable 'x'. Reorder the terms: 1 + -16 + -8x + 4x2 = 16 + 8x + -16 + -8x Combine like terms: 1 + -16 = -15 -15 + -8x + 4x2 = 16 + 8x + -16 + -8x Reorder the terms: -15 + -8x + 4x2 = 16 + -16 + 8x + -8x Combine like terms: 16 + -16 = 0 -15 + -8x + 4x2 = 0 + 8x + -8x -15 + -8x + 4x2 = 8x + -8x Combine like terms: 8x + -8x = 0 -15 + -8x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -3.75 + -2x + x2 = 0 Move the constant term to the right: Add '3.75' to each side of the equation. -3.75 + -2x + 3.75 + x2 = 0 + 3.75 Reorder the terms: -3.75 + 3.75 + -2x + x2 = 0 + 3.75 Combine like terms: -3.75 + 3.75 = 0.00 0.00 + -2x + x2 = 0 + 3.75 -2x + x2 = 0 + 3.75 Combine like terms: 0 + 3.75 = 3.75 -2x + x2 = 3.75 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 = 3.75 + 1 Reorder the terms: 1 + -2x + x2 = 3.75 + 1 Combine like terms: 3.75 + 1 = 4.75 1 + -2x + x2 = 4.75 Factor a perfect square on the left side: (x + -1)(x + -1) = 4.75 Calculate the square root of the right side: 2.179449472 Break this problem into two subproblems by setting (x + -1) equal to 2.179449472 and -2.179449472.Subproblem 1
x + -1 = 2.179449472 Simplifying x + -1 = 2.179449472 Reorder the terms: -1 + x = 2.179449472 Solving -1 + x = 2.179449472 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 = 2.179449472 + 1 Combine like terms: -1 + 1 = 0 0 + x = 2.179449472 + 1 x = 2.179449472 + 1 Combine like terms: 2.179449472 + 1 = 3.179449472 x = 3.179449472 Simplifying x = 3.179449472Subproblem 2
x + -1 = -2.179449472 Simplifying x + -1 = -2.179449472 Reorder the terms: -1 + x = -2.179449472 Solving -1 + x = -2.179449472 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 = -2.179449472 + 1 Combine like terms: -1 + 1 = 0 0 + x = -2.179449472 + 1 x = -2.179449472 + 1 Combine like terms: -2.179449472 + 1 = -1.179449472 x = -1.179449472 Simplifying x = -1.179449472Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.179449472, -1.179449472}
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