Question

1.05*9.5 using suitable identity​

Answer 1

Answer:

the identity to be used is (a+b)(a-b)

=9.975

Answer 2

Answer:

Step-by-step explanation:

I think it's 10.5 and not 1.05

10.5=10+0.5

9.5=10-0.5

Therefore,

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

=(10)^2 - (0.5)^2

=100-0.25

=99.75

Identity used is (a+b)*(a-b) = a^2 - b^2