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Simplifying k(x2) + 28x + 4 = 0 Multiply k * x2 kx2 + 28x + 4 = 0 Reorder the terms: 4 + kx2 + 28x = 0 Solving 4 + kx2 + 28x = 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 + kx2 + -4 + 28x = 0 + -4 Reorder the terms: 4 + -4 + kx2 + 28x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + kx2 + 28x = 0 + -4 kx2 + 28x = 0 + -4 Combine like terms: 0 + -4 = -4 kx2 + 28x = -4 Add '-28x' to each side of the equation. kx2 + 28x + -28x = -4 + -28x Combine like terms: 28x + -28x = 0 kx2 + 0 = -4 + -28x kx2 = -4 + -28x Divide each side by 'x2'. k = -4x-2 + -28x-1 Simplifying k = -4x-2 + -28x-1
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