14×(1/2)^2-50×(-1/5)^2

Question

14×(1/2)^2-50×(-1/5)^2

Answer 1

14.(1/2)²-50.(-1/5)²=14.1/4-50.1/25=
=14/4-50/25=7/2-2/1=3,5-2=1,5