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