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Simplifying 2x2 + kx + -7 = 0 Reorder the terms: -7 + kx + 2x2 = 0 Solving -7 + kx + 2x2 = 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 + kx + 7 + 2x2 = 0 + 7 Reorder the terms: -7 + 7 + kx + 2x2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + kx + 2x2 = 0 + 7 kx + 2x2 = 0 + 7 Combine like terms: 0 + 7 = 7 kx + 2x2 = 7 Add '-2x2' to each side of the equation. kx + 2x2 + -2x2 = 7 + -2x2 Combine like terms: 2x2 + -2x2 = 0 kx + 0 = 7 + -2x2 kx = 7 + -2x2 Divide each side by 'x'. k = 7x-1 + -2x Simplifying k = 7x-1 + -2x
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