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Simplifying x2 + bx + 16 = 4 Reorder the terms: 16 + bx + x2 = 4 Solving 16 + bx + x2 = 4 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + bx + -16 + x2 = 4 + -16 Reorder the terms: 16 + -16 + bx + x2 = 4 + -16 Combine like terms: 16 + -16 = 0 0 + bx + x2 = 4 + -16 bx + x2 = 4 + -16 Combine like terms: 4 + -16 = -12 bx + x2 = -12 Add '-1x2' to each side of the equation. bx + x2 + -1x2 = -12 + -1x2 Combine like terms: x2 + -1x2 = 0 bx + 0 = -12 + -1x2 bx = -12 + -1x2 Divide each side by 'x'. b = -12x-1 + -1x Simplifying b = -12x-1 + -1x
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