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Simplifying 4x2 + 7x + -1k = 0 Reorder the terms: -1k + 7x + 4x2 = 0 Solving -1k + 7x + 4x2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-7x' to each side of the equation. -1k + 7x + -7x + 4x2 = 0 + -7x Combine like terms: 7x + -7x = 0 -1k + 0 + 4x2 = 0 + -7x -1k + 4x2 = 0 + -7x Remove the zero: -1k + 4x2 = -7x Add '-4x2' to each side of the equation. -1k + 4x2 + -4x2 = -7x + -4x2 Combine like terms: 4x2 + -4x2 = 0 -1k + 0 = -7x + -4x2 -1k = -7x + -4x2 Divide each side by '-1'. k = 7x + 4x2 Simplifying k = 7x + 4x2
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