Question

produtos notáveis:

a) (B/2+1)²

b) (B/2-1)²

C)(B/2+1)(B/2-1)

Answer 1

Explicação passo-a-passo:

a) (B/2+1)²

(B/2+1).(B/2+1)=(B/2)²+2.(B/2).(1)+(1)²

(B/2+1).(B/2+1)=B²/4+B+1

b) (B/2-1)²

(B/2-1).(B/2-1)=(B/2)²+2.(B/2).(-1)+(-1)²

(B/2-1).(B/2-1)=B²/4-B+1

C)(B/2+1)(B/2-1)

=(B/2)²-1.(B/2)+1.(B/2)+(-1).(+1)

=B²/4-B/2+B/2-1

=B²/4+0-1

=B²/4-1

Espero ter ajudado!