Question

Sendo x =(2-1/2)elevado a -2 e y=(1- 1/3)elevado a -1 calcule

Answer 1

Resposta:

$x=\left(2-\frac{1}{2}\right)^{-2}\quad :\quad x=\frac{4}{9}$

$y=\left(1-\frac{1}{2}\right)^{-1}\quad :\quad y=2$

$a)\frac{4}{9}\cdot \:2=\frac{8}{9}$

$b)\frac{\frac{4}{9}}{2}=\frac{2}{9}$

$c)\frac{4}{9}+2=\frac{22}{9}$

$d)\frac{4}{9}-2=-\frac{14}{9}$