previous
try again
check
ii) FH
FH
2
=
2
+
2
FH
2
=
2
+
2
FH
2
=
+
FH=
FH=
2dp
ii) BH
BH
2
=
2
+
2
BH
2
=
2
+
2
BH
2
=
+
BH=
BH=
2dp
