Question

evaluate using suitable identity: 5.2×4.8​

Answer 1

Answer:

24.6

Step-by-step explanation:

5.2×4.8​                                               [ (a-b)(a+b) = a^2-b^2 ]

= [ 5+0.2 ] [ 5-0.2 ]

= 5^2 - 0.2^2

= 25-0.4

= 24.6