Question

using identities, Evaluate :
10.5 × 9.5​

Answer 1

Answer:

The answer is 99.75

Step-by-step explanation:

This can be written as :

10.5 x 9.5 = (10 + 0.5) x (10 - 0.5)

=> (10)^2 - (0.5)^2 (since, (a+b) (a-b) = a^2 - b^2)

=> 100 - 0.25

=> 99.75