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Simplifying x2 + -4 = 13 Reorder the terms: -4 + x2 = 13 Solving -4 + x2 = 13 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 + x2 = 13 + 4 Combine like terms: -4 + 4 = 0 0 + x2 = 13 + 4 x2 = 13 + 4 Combine like terms: 13 + 4 = 17 x2 = 17 Simplifying x2 = 17 Take the square root of each side: x = {-4.123105626, 4.123105626}
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