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Simplifying 9z2 + -49 = 0 Reorder the terms: -49 + 9z2 = 0 Solving -49 + 9z2 = 0 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '49' to each side of the equation. -49 + 49 + 9z2 = 0 + 49 Combine like terms: -49 + 49 = 0 0 + 9z2 = 0 + 49 9z2 = 0 + 49 Combine like terms: 0 + 49 = 49 9z2 = 49 Divide each side by '9'. z2 = 5.444444444 Simplifying z2 = 5.444444444 Take the square root of each side: z = {-2.333333333, 2.333333333}
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