Question

Estou precisando de Ajuda.

Answer 1

2- 2^a.2^a/4^a+4^a+4^a+4^a+4^a

4^a=2^2a

2^2a/5.2^2a
1/5

$\boxed{\boxed{\boxed{\mathsf{ \frac{1}{5} }}}}$
$\boxed{\boxed{\boxed{\mathsf{ \textbf{ \textit{alternativa \: \huge{(e).}}}}}}}$
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3- (9^x-27^x)²
9^x=3^2x
27=3^3x

(3^2x-3^3x)=(2²-2³)²=16

$\boxed{\boxed{\boxed{\mathsf{16}}}}$
$\boxed{\boxed{\boxed{\mathsf{ \textbf{ \textit{alternativa \: \huge{(c).}}}}}}}$
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