Question

Quanto vale 1/2 . 2 .3² ?

Answer 1

1/2 . 2 .3²=
1/2 . 2 .9=18/2

=9

Abraços

Answer 2

Olá.

$\mathsf{\dfrac{1}{2}\cdot2\cdot3^2=}\\\\ \mathsf{\dfrac{1}{2}\cdot2\cdot9=}\\\\ \mathsf{\dfrac{1}{2}\cdot18=}\\\\ \mathsf{\dfrac{18}{2}=}\\\\ \boxed{\boxed{\mathsf{9}}}$

Qualquer dúvida, deixe nos comentários.
Bons estudos.