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