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Simplifying (2x + -7)(x + 8) = 1152 Reorder the terms: (-7 + 2x)(x + 8) = 1152 Reorder the terms: (-7 + 2x)(8 + x) = 1152 Multiply (-7 + 2x) * (8 + x) (-7(8 + x) + 2x * (8 + x)) = 1152 ((8 * -7 + x * -7) + 2x * (8 + x)) = 1152 ((-56 + -7x) + 2x * (8 + x)) = 1152 (-56 + -7x + (8 * 2x + x * 2x)) = 1152 (-56 + -7x + (16x + 2x2)) = 1152 Combine like terms: -7x + 16x = 9x (-56 + 9x + 2x2) = 1152 Solving -56 + 9x + 2x2 = 1152 Solving for variable 'x'. Reorder the terms: -56 + -1152 + 9x + 2x2 = 1152 + -1152 Combine like terms: -56 + -1152 = -1208 -1208 + 9x + 2x2 = 1152 + -1152 Combine like terms: 1152 + -1152 = 0 -1208 + 9x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -604 + 4.5x + x2 = 0 Move the constant term to the right: Add '604' to each side of the equation. -604 + 4.5x + 604 + x2 = 0 + 604 Reorder the terms: -604 + 604 + 4.5x + x2 = 0 + 604 Combine like terms: -604 + 604 = 0 0 + 4.5x + x2 = 0 + 604 4.5x + x2 = 0 + 604 Combine like terms: 0 + 604 = 604 4.5x + x2 = 604 The x term is 4.5x. Take half its coefficient (2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. 4.5x + 5.0625 + x2 = 604 + 5.0625 Reorder the terms: 5.0625 + 4.5x + x2 = 604 + 5.0625 Combine like terms: 604 + 5.0625 = 609.0625 5.0625 + 4.5x + x2 = 609.0625 Factor a perfect square on the left side: (x + 2.25)(x + 2.25) = 609.0625 Calculate the square root of the right side: 24.67919164 Break this problem into two subproblems by setting (x + 2.25) equal to 24.67919164 and -24.67919164.Subproblem 1
x + 2.25 = 24.67919164 Simplifying x + 2.25 = 24.67919164 Reorder the terms: 2.25 + x = 24.67919164 Solving 2.25 + x = 24.67919164 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + x = 24.67919164 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + x = 24.67919164 + -2.25 x = 24.67919164 + -2.25 Combine like terms: 24.67919164 + -2.25 = 22.42919164 x = 22.42919164 Simplifying x = 22.42919164Subproblem 2
x + 2.25 = -24.67919164 Simplifying x + 2.25 = -24.67919164 Reorder the terms: 2.25 + x = -24.67919164 Solving 2.25 + x = -24.67919164 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + x = -24.67919164 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + x = -24.67919164 + -2.25 x = -24.67919164 + -2.25 Combine like terms: -24.67919164 + -2.25 = -26.92919164 x = -26.92919164 Simplifying x = -26.92919164Solution
The solution to the problem is based on the solutions from the subproblems. x = {22.42919164, -26.92919164}
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