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Simplifying 2x2 + bx + -9 = 0 Reorder the terms: -9 + bx + 2x2 = 0 Solving -9 + bx + 2x2 = 0 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '9' to each side of the equation. -9 + bx + 9 + 2x2 = 0 + 9 Reorder the terms: -9 + 9 + bx + 2x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + bx + 2x2 = 0 + 9 bx + 2x2 = 0 + 9 Combine like terms: 0 + 9 = 9 bx + 2x2 = 9 Add '-2x2' to each side of the equation. bx + 2x2 + -2x2 = 9 + -2x2 Combine like terms: 2x2 + -2x2 = 0 bx + 0 = 9 + -2x2 bx = 9 + -2x2 Divide each side by 'x'. b = 9x-1 + -2x Simplifying b = 9x-1 + -2x
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