(3.2)2 – (1.8)2 equals
-
7.0
- 2.56
- 13.48
- 2.0
- 0.07
The correct answer is: A
Explanation
(3.2)2 - (1.8)2 = (3.2 + 1.8)(3.2 - 1.8)= 5 x 1.4
= 7