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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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