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1. $9^{x + 1} = 3^{x - 2}$

Answer: Option C

Explanation:

9^{x + 1} = 3^{x - 2} বা, {(3^{2})}^{x + 1} = 3^{x - 2} বা, 3^{2 x + 2} = 3^{x - 2} বা, 2 x + 2 = x - 2 বা, 2 x - x = - 2 - 2 ∴ x = - 4

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