Question

(2/1+1/4)^-2 me ajudem por favor

Answer 1

$(\dfrac{2}{1} +\dfrac{1}{4} )^{-2}$

mmc = 4

$(\dfrac{9}{4} )^{-2}$

propriedade básica

$(\dfrac{4}{9} )^{2}$

$\dfrac{4^{2}}{9^{2}}$

$\dfrac{16}{81}$