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Simplifying 5x2 + kx + -4 = 0 Reorder the terms: -4 + kx + 5x2 = 0 Solving -4 + kx + 5x2 = 0 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 + kx + 4 + 5x2 = 0 + 4 Reorder the terms: -4 + 4 + kx + 5x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + kx + 5x2 = 0 + 4 kx + 5x2 = 0 + 4 Combine like terms: 0 + 4 = 4 kx + 5x2 = 4 Add '-5x2' to each side of the equation. kx + 5x2 + -5x2 = 4 + -5x2 Combine like terms: 5x2 + -5x2 = 0 kx + 0 = 4 + -5x2 kx = 4 + -5x2 Divide each side by 'x'. k = 4x-1 + -5x Simplifying k = 4x-1 + -5x
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