Question

Calcule os quadrados :

a) (m - $\frac{1}{2}$ ) ² =

b) ($\frac{a}{2}$ - 1 ) ² =

Answer 1

Olá Mell, 

a) (m -  ) ² =
 m² - 2.m.$\frac{1}{2}$+$( \frac{1}{2} )^2$
 m²-m+$\frac{1}{4}$

b) ( - 1 ) ²
$( \frac{a}{2})^2-2 .\frac{a}{2}.1 + 1^2 \\ \\ \frac{a^2}{4}-a+1$

=)