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Simplifying (n + 2)(n + -2) = 0 Reorder the terms: (2 + n)(n + -2) = 0 Reorder the terms: (2 + n)(-2 + n) = 0 Multiply (2 + n) * (-2 + n) (2(-2 + n) + n(-2 + n)) = 0 ((-2 * 2 + n * 2) + n(-2 + n)) = 0 ((-4 + 2n) + n(-2 + n)) = 0 (-4 + 2n + (-2 * n + n * n)) = 0 (-4 + 2n + (-2n + n2)) = 0 Combine like terms: 2n + -2n = 0 (-4 + 0 + n2) = 0 (-4 + n2) = 0 Solving -4 + n2 = 0 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + n2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + n2 = 0 + 4 n2 = 0 + 4 Combine like terms: 0 + 4 = 4 n2 = 4 Simplifying n2 = 4 Take the square root of each side: n = {-2, 2}
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