Question

(2cm)^2 is equal to 4cm or 4cm^2 ?

Answer 1

\[\Large (3x)^2\quad=\quad 3^2x^2\quad=\quad 9x^2\]We square everything in the brackets, even the units.\[\Large (2cm)^2\quad=\quad 2^2cm^2\]

Answer 2

\(\bf (ab)^2\implies a^2b^2\)

Answer 3

thanks