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Simplifying (x + 4)(x + -4) = -55 Reorder the terms: (4 + x)(x + -4) = -55 Reorder the terms: (4 + x)(-4 + x) = -55 Multiply (4 + x) * (-4 + x) (4(-4 + x) + x(-4 + x)) = -55 ((-4 * 4 + x * 4) + x(-4 + x)) = -55 ((-16 + 4x) + x(-4 + x)) = -55 (-16 + 4x + (-4 * x + x * x)) = -55 (-16 + 4x + (-4x + x2)) = -55 Combine like terms: 4x + -4x = 0 (-16 + 0 + x2) = -55 (-16 + x2) = -55 Solving -16 + x2 = -55 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 + 16 + x2 = -55 + 16 Combine like terms: -16 + 16 = 0 0 + x2 = -55 + 16 x2 = -55 + 16 Combine like terms: -55 + 16 = -39 x2 = -39 Simplifying x2 = -39 Reorder the terms: 39 + x2 = -39 + 39 Combine like terms: -39 + 39 = 0 39 + x2 = 0 The solution to this equation could not be determined.
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