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