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Simplifying 9(x2) + 21b + -8 = 0 Reorder the terms: -8 + 21b + 9x2 = 0 Solving -8 + 21b + 9x2 = 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 + 21b + 8 + 9x2 = 0 + 8 Reorder the terms: -8 + 8 + 21b + 9x2 = 0 + 8 Combine like terms: -8 + 8 = 0 0 + 21b + 9x2 = 0 + 8 21b + 9x2 = 0 + 8 Combine like terms: 0 + 8 = 8 21b + 9x2 = 8 Add '-9x2' to each side of the equation. 21b + 9x2 + -9x2 = 8 + -9x2 Combine like terms: 9x2 + -9x2 = 0 21b + 0 = 8 + -9x2 21b = 8 + -9x2 Divide each side by '21'. b = 0.380952381 + -0.4285714286x2 Simplifying b = 0.380952381 + -0.4285714286x2
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