The expression (11.98 x 11.98 + 11.98 x x + 0.02 x 0.02) will be a perfect square for xequal to:	Select the correct option.
A) 0.02  B) 0.2  C) 0.04  D) 0.4  E) None
EXPLANATION   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   Answer 0.04
<result>C</result>
The expression (11.98 x 11.98 + 11.98 x x + 0.02 x 0.02) will be a perfect square for xequal to: