Question

expand (1/2a-1/4b*1/5)^2

Answer 1

Answer:

hii mate

ur answer is 1/4a^2+1/400b^2-1/20ab

Step-by-step explanation:

(1/2a-1/4b*1/5)^2

first multiply

(1/2a-1/20b)^2

use formula.... (a-b)^2=a^2+b^2-2ab

1/4a^2+1/400b^2-2(1/2a×1/20b)

1/4a^2+1/400b^2-(a*1/20b)

1/4a^2+1/400b^2-1/20ab

hope it's help