Q1: The expression (11.98 x 11.98 + 11.98 x x+ 0.02 x 0.02) will be a perfect square for xequal to:
A 0.2
B 0.04
C 0.4
D 0.02
ANS:C - 0.04
Given expression = (11.98)2 + (0.02)2 + 11.98 x x.
For the given expression to be a perfect square, we must have
11.98 x x= 2 x 11.98 x 0.02 or x= 0.04
