Question

Using identity 10.8*9.2

Answer 1

Answer:

(10+0.8) (10-0.8)

=(10) ^2- (0.8) ^2

=100-0.64

=99.36

Answer 2

Answer:

we can write 10.8 as 10 +0.8

and 9.2 as 10-0.8

by using identity (A-B)(A+B)=A^2-B^2("^"means power