Question

O valor desconhecido na equação *
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Answer 1

$\mathsf{log_{2}x=9}\\\mathsf{x=2^9}\\\huge\boxed{\boxed{\boxed{\boxed{\mathsf{x=512}}}}}$

$\huge\boxed{\boxed{\boxed{\boxed{\mathsf{\maltese~~alternativa~~d}}}}}$