c=√d/ab ,make d the subject.

Answer 1

c=√d/ab
abc = √d
(abc)^2 = d

Answer 2

c=√d/ab
abc = √d
(abc)^2 = d
if i take d as subject then
d=(abc)^2
d={√d }^2(given abc = √d)
d=d or
d=(abc)^2
d=(ab√d/ab)^2
d=(ab)2(√d/ab)^2
d=d

Answer 3

c=√d/ab
abc = √d take bothsides sqare
(abc)^2 = d