Question

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Answer 1

Answer:

x=2

Step-by-step explanation:

$\frac{ {3}^{(x + 2)} - 9 }{8} = 9$

${3}^{(x + 2)} = 8 \times 9 + 9$

${3}^{(x + 2)} = 9 \times 9 = {9}^{2}$

${3}^{(x + 2)} = {3}^{4}$

Comparing the powers,

$x + 2 = 4$

$x = 2$

Answer 2

Answer:

X=2

Step-by-step explanation:

3^(x+2)-3^2 = 8*9

3^x +3^2-3^2=72

3^2(3^x-1)=72

3^x - 1 = 72/9

3^x - 1 = 8

3^x = 8 + 1

3^x = 9

3^x = 3^2

x =2