Simplify the following using the indentities:
(i)
(ii)
(iii)
(iv)
(v)
=
= 100
(178)2 – (22)2
= (178 + 22) (178 – 22)
= 200 × 156
= 31200
= 300
(1.73) – (0.27)
= (1.73 + 0.27) (1.73 – 0.27)
= 2 (1.46)
= 2.92
