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Simplifying 9X^{2}+ -1 = 0 Reorder the terms: -1 + 9X^{2}= 0 Solving -1 + 9X^{2}= 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 9X^{2}= 0 + 1 Combine like terms: -1 + 1 = 0 0 + 9X^{2}= 0 + 1 9X^{2}= 0 + 1 Combine like terms: 0 + 1 = 1 9X^{2}= 1 Divide each side by '9'. X^{2}= 0.1111111111 Simplifying X^{2}= 0.1111111111 Take the square root of each side: X = {-0.333333333, 0.333333333}

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