Question

Me ajudem pra amanhã

Answer 1

B)(7²+1):(1+4)².(2³-3)
(49+1):(1²+4²).(8-3)
50:(1+16).5
50:17.5
2,9411764706×5
=14,7058823529

C)9²:(7²+1-23)
81:(49+1-23)
81:27=3

Espero ter ajudado.