Question

Evaluate 9.2^2 by using identities

Answer 1

Answer:

Here is ur answer :

9.8 × 10.2

= ( 10 – 0.2) ( 10 + 0.2)

Using identity : ( a + b) ( a - b) = a² - b²

➡️(10)² – (0.2)²

➡️100 – 0.04

➡️99.96

HOPE IT HELPS YOU..

Answer 2

We can calculate it by using (a+b)^2 identity
Let 9.2=9+.2 so we have
(9+.2)^2=9^2+.2^2+2x9x.2
=81+.04+3.6
=84.64 is answer