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Simplifying 3x^{2}+ -108 = 0 Reorder the terms: -108 + 3x^{2}= 0 Solving -108 + 3x^{2}= 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '108' to each side of the equation. -108 + 108 + 3x^{2}= 0 + 108 Combine like terms: -108 + 108 = 0 0 + 3x^{2}= 0 + 108 3x^{2}= 0 + 108 Combine like terms: 0 + 108 = 108 3x^{2}= 108 Divide each side by '3'. x^{2}= 36 Simplifying x^{2}= 36 Take the square root of each side: x = {-6, 6}

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