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Simplifying 4X2 + 20X + -5K = 0 Reorder the terms: -5K + 20X + 4X2 = 0 Solving -5K + 20X + 4X2 = 0 Solving for variable 'K'. Move all terms containing K to the left, all other terms to the right. Add '-20X' to each side of the equation. -5K + 20X + -20X + 4X2 = 0 + -20X Combine like terms: 20X + -20X = 0 -5K + 0 + 4X2 = 0 + -20X -5K + 4X2 = 0 + -20X Remove the zero: -5K + 4X2 = -20X Add '-4X2' to each side of the equation. -5K + 4X2 + -4X2 = -20X + -4X2 Combine like terms: 4X2 + -4X2 = 0 -5K + 0 = -20X + -4X2 -5K = -20X + -4X2 Divide each side by '-5'. K = 4X + 0.8X2 Simplifying K = 4X + 0.8X2
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