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Simplifying x^{2}+ 4 = 17 Reorder the terms: 4 + x^{2}= 17 Solving 4 + x^{2}= 17 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^{2}= 17 + -4 Combine like terms: 4 + -4 = 0 0 + x^{2}= 17 + -4 x^{2}= 17 + -4 Combine like terms: 17 + -4 = 13 x^{2}= 13 Simplifying x^{2}= 13 Take the square root of each side: x = {-3.605551275, 3.605551275}

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