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Simplifying 9x2 + bx + 1 = 0 Reorder the terms: 1 + bx + 9x2 = 0 Solving 1 + bx + 9x2 = 0 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + bx + -1 + 9x2 = 0 + -1 Reorder the terms: 1 + -1 + bx + 9x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + bx + 9x2 = 0 + -1 bx + 9x2 = 0 + -1 Combine like terms: 0 + -1 = -1 bx + 9x2 = -1 Add '-9x2' to each side of the equation. bx + 9x2 + -9x2 = -1 + -9x2 Combine like terms: 9x2 + -9x2 = 0 bx + 0 = -1 + -9x2 bx = -1 + -9x2 Divide each side by 'x'. b = -1x-1 + -9x Simplifying b = -1x-1 + -9x
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