Question

using identities evaluate 1.05 ×9.5

Answer 1

hey friend here is your answer

1.05*9.5
1.05*9.5*10
(1+0.05)*(1-0.05)*10
[(1)2 -(0.05)2*10]
[1-0.0025]*10
0.9975*10
9.975
If it is helpful then mark my answer please

Answer 2

=(0.5 + 1) (0.5 +9)

=(0.5)^2+(9+1)×0.5 + (9×1)

(using (x+a)(x+b)=x^2+(a+b)x+ (ab) identity)

=0.25 + 5 + 9

=14.25