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Simplifying x2 + bx + -20 = 0 Reorder the terms: -20 + bx + x2 = 0 Solving -20 + bx + x2 = 0 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '20' to each side of the equation. -20 + bx + 20 + x2 = 0 + 20 Reorder the terms: -20 + 20 + bx + x2 = 0 + 20 Combine like terms: -20 + 20 = 0 0 + bx + x2 = 0 + 20 bx + x2 = 0 + 20 Combine like terms: 0 + 20 = 20 bx + x2 = 20 Add '-1x2' to each side of the equation. bx + x2 + -1x2 = 20 + -1x2 Combine like terms: x2 + -1x2 = 0 bx + 0 = 20 + -1x2 bx = 20 + -1x2 Divide each side by 'x'. b = 20x-1 + -1x Simplifying b = 20x-1 + -1x
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