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Simplifying 5r2 + -8 = 32 Reorder the terms: -8 + 5r2 = 32 Solving -8 + 5r2 = 32 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + 5r2 = 32 + 8 Combine like terms: -8 + 8 = 0 0 + 5r2 = 32 + 8 5r2 = 32 + 8 Combine like terms: 32 + 8 = 40 5r2 = 40 Divide each side by '5'. r2 = 8 Simplifying r2 = 8 Take the square root of each side: r = {-2.828427125, 2.828427125}
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