Resposta:
Explicação passo-a-passo:
64
[tex]\huge{\boxed{\boxed{ \tt \:4x^4x^4 \: }}}\\\\\huge{\boxed{\boxed{ \tt \: 4x^{4+4}\: }}}\\\\\huge{\boxed{\boxed{ \tt \:4x^8<\: }}}[/tex]
