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Simplifying 2x2 + bx + 8 = 0 Reorder the terms: 8 + bx + 2x2 = 0 Solving 8 + bx + 2x2 = 0 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + bx + -8 + 2x2 = 0 + -8 Reorder the terms: 8 + -8 + bx + 2x2 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + bx + 2x2 = 0 + -8 bx + 2x2 = 0 + -8 Combine like terms: 0 + -8 = -8 bx + 2x2 = -8 Add '-2x2' to each side of the equation. bx + 2x2 + -2x2 = -8 + -2x2 Combine like terms: 2x2 + -2x2 = 0 bx + 0 = -8 + -2x2 bx = -8 + -2x2 Divide each side by 'x'. b = -8x-1 + -2x Simplifying b = -8x-1 + -2x
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