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Simplifying (X + -4)(x + 4) = 9 Reorder the terms: (-4 + X)(x + 4) = 9 Reorder the terms: (-4 + X)(4 + x) = 9 Multiply (-4 + X) * (4 + x) (-4(4 + x) + X(4 + x)) = 9 ((4 * -4 + x * -4) + X(4 + x)) = 9 ((-16 + -4x) + X(4 + x)) = 9 (-16 + -4x + (4 * X + x * X)) = 9 (-16 + -4x + (4X + xX)) = 9 Reorder the terms: (-16 + 4X + -4x + xX) = 9 (-16 + 4X + -4x + xX) = 9 Solving -16 + 4X + -4x + xX = 9 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 4X + -4x + 16 + xX = 9 + 16 Reorder the terms: -16 + 16 + 4X + -4x + xX = 9 + 16 Combine like terms: -16 + 16 = 0 0 + 4X + -4x + xX = 9 + 16 4X + -4x + xX = 9 + 16 Combine like terms: 9 + 16 = 25 4X + -4x + xX = 25 Add '4x' to each side of the equation. 4X + -4x + 4x + xX = 25 + 4x Combine like terms: -4x + 4x = 0 4X + 0 + xX = 25 + 4x 4X + xX = 25 + 4x Reorder the terms: -25 + 4X + -4x + xX = 25 + 4x + -25 + -4x Reorder the terms: -25 + 4X + -4x + xX = 25 + -25 + 4x + -4x Combine like terms: 25 + -25 = 0 -25 + 4X + -4x + xX = 0 + 4x + -4x -25 + 4X + -4x + xX = 4x + -4x Combine like terms: 4x + -4x = 0 -25 + 4X + -4x + xX = 0 The solution to this equation could not be determined.
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