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Simplifying a2 + 10d + 9 = 0 Reorder the terms: 9 + a2 + 10d = 0 Solving 9 + a2 + 10d = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + a2 + -9 + 10d = 0 + -9 Reorder the terms: 9 + -9 + a2 + 10d = 0 + -9 Combine like terms: 9 + -9 = 0 0 + a2 + 10d = 0 + -9 a2 + 10d = 0 + -9 Combine like terms: 0 + -9 = -9 a2 + 10d = -9 Add '-10d' to each side of the equation. a2 + 10d + -10d = -9 + -10d Combine like terms: 10d + -10d = 0 a2 + 0 = -9 + -10d a2 = -9 + -10d Simplifying a2 = -9 + -10d Reorder the terms: 9 + a2 + 10d = -9 + -10d + 9 + 10d Reorder the terms: 9 + a2 + 10d = -9 + 9 + -10d + 10d Combine like terms: -9 + 9 = 0 9 + a2 + 10d = 0 + -10d + 10d 9 + a2 + 10d = -10d + 10d Combine like terms: -10d + 10d = 0 9 + a2 + 10d = 0 The solution to this equation could not be determined.
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