Question

Solve this question properly.
${ 3}^{x + 2} - 2 \times { 3}^{x + 2} = 81$
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Answer 1

Step-by-step explanation:

${ 3}^{x + 2} + 2 \times { 3}^{x + 2} = 81 \\ {3}^{x + 2} (1 + 2) = 81 \\ {3}^{x + 2} \times (3) = 81 \\ {3}^{x + 2} = \frac{81}{3} \\ {3}^{x + 2} = 27 \\ {3}^{x + 2} = {3}^{3} \\ x + 2 = 3 \\ x = 3 - 2 \\ x = 1$