Question

[2+4/9-1]^-2 step by step explanation​

Answer 1

$\left(2+\dfrac{4}{9}-1\right)^{-2}$

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

$=\frac{1}{\left(\frac{4}{9}+1\right)^2}$

$=\frac{9^2}{13^2}$

$=\frac{81}{13^2}$

$=\dfrac{81}{169}$