Question

use(a+b)2=a2+2ab +b2 to evalute the following (10.2)^2

​

Answer 1

==> (10.2)²

==> (10 + 0.2)²

(a + b)² = a² + b² + 2ab

==> (10)² + (0.2)² + 2*0.2*10

==> 100 + 0.04 + 4

==> 104 + 0.04

==> 104.04

The answer to this question is 104.04