If m = 2, find the value of :
(i) m – 2
(ii) 3m – 5
(iii) 9 – 5m
(iv) 3m2 - 2m - 7
(v) 
(i) m - 2
Put m = 2
= 2 -2
=0
(ii) 3m - 5
Put m = 2
=3(2) - 5
=6 - 5
= 1
(iii) 9 - 5m
Put m = 2
= 9 - 5(2)
= 9 - 10
= -1
(iv) 3m2 - 2m - 7
Put m = 2
= 3(2)2 - 2(2) - 7
=3(4) - 4 - 7
=12 - 11
=1
(v)
Put m = 2
= 5 - 4
= 1
12