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Simplifying X2 + AX + -20 = 0 Reorder the terms: -20 + AX + X2 = 0 Solving -20 + AX + X2 = 0 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '20' to each side of the equation. -20 + AX + 20 + X2 = 0 + 20 Reorder the terms: -20 + 20 + AX + X2 = 0 + 20 Combine like terms: -20 + 20 = 0 0 + AX + X2 = 0 + 20 AX + X2 = 0 + 20 Combine like terms: 0 + 20 = 20 AX + X2 = 20 Add '-1X2' to each side of the equation. AX + X2 + -1X2 = 20 + -1X2 Combine like terms: X2 + -1X2 = 0 AX + 0 = 20 + -1X2 AX = 20 + -1X2 Divide each side by 'X'. A = 20X-1 + -1X Simplifying A = 20X-1 + -1X
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