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Simplifying 3k2 + -4 = 20 Reorder the terms: -4 + 3k2 = 20 Solving -4 + 3k2 = 20 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + 3k2 = 20 + 4 Combine like terms: -4 + 4 = 0 0 + 3k2 = 20 + 4 3k2 = 20 + 4 Combine like terms: 20 + 4 = 24 3k2 = 24 Divide each side by '3'. k2 = 8 Simplifying k2 = 8 Take the square root of each side: k = {-2.828427125, 2.828427125}
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