Question

CALCULANDO O VALOR DA ESPRESSAO LOG2 8 + LOG3 81 OBTEMOS ?

Answer 1

$\mathsf{log_{2}^~{8}}}+\mathsf{log_{3}^~{81}}}=~?}}}}}\\\\\\\\ \mathsf{(2^{x}=8)+(3^{x}=81)}}}\\\\\\\\ \mathsf{(\diagup\!\!\!2^{x}=\diagup\!\!\!2^{3})}}+\mathsf{(\diagup\!\!\!3^{x}=\diagup\!\!\!3^{4})}}}\\\\\\\\ \mathsf{x = 3+4}}}}\\\\\\\\\ \Large\boxed{\boxed{\mathbf{x=7.}}}}}}}}}}~~\checkmark}}}}$

Espero que te ajude. '-'