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Simplifying x2 + -8x + -144 = 0 Reorder the terms: -144 + -8x + x2 = 0 Solving -144 + -8x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '144' to each side of the equation. -144 + -8x + 144 + x2 = 0 + 144 Reorder the terms: -144 + 144 + -8x + x2 = 0 + 144 Combine like terms: -144 + 144 = 0 0 + -8x + x2 = 0 + 144 -8x + x2 = 0 + 144 Combine like terms: 0 + 144 = 144 -8x + x2 = 144 The x term is -8x. Take half its coefficient (-4). Square it (16) and add it to both sides. Add '16' to each side of the equation. -8x + 16 + x2 = 144 + 16 Reorder the terms: 16 + -8x + x2 = 144 + 16 Combine like terms: 144 + 16 = 160 16 + -8x + x2 = 160 Factor a perfect square on the left side: (x + -4)(x + -4) = 160 Calculate the square root of the right side: 12.649110641 Break this problem into two subproblems by setting (x + -4) equal to 12.649110641 and -12.649110641.Subproblem 1
x + -4 = 12.649110641 Simplifying x + -4 = 12.649110641 Reorder the terms: -4 + x = 12.649110641 Solving -4 + x = 12.649110641 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 12.649110641 + 4 Combine like terms: -4 + 4 = 0 0 + x = 12.649110641 + 4 x = 12.649110641 + 4 Combine like terms: 12.649110641 + 4 = 16.649110641 x = 16.649110641 Simplifying x = 16.649110641Subproblem 2
x + -4 = -12.649110641 Simplifying x + -4 = -12.649110641 Reorder the terms: -4 + x = -12.649110641 Solving -4 + x = -12.649110641 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -12.649110641 + 4 Combine like terms: -4 + 4 = 0 0 + x = -12.649110641 + 4 x = -12.649110641 + 4 Combine like terms: -12.649110641 + 4 = -8.649110641 x = -8.649110641 Simplifying x = -8.649110641Solution
The solution to the problem is based on the solutions from the subproblems. x = {16.649110641, -8.649110641}
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