Question

Help me with this notation math.

Answer 1

$\\ \sf\longmapsto \left(\dfrac{3}{4}\right)^2\times \left(\dfrac{1}{4}\right)^{-2}$

$\\ \sf\longmapsto \dfrac{3^2}{4^2}\times 4^2$

$\\ \sf\longmapsto 3^2$

$\\ \sf\longmapsto 9$