Question

Using suitable identity evaluate : 10.3 x 9.9​

Answer 1

Answer:10.3 X 9.9 = 101.97

Step-by-step explanation:

10.3 X 9.9

= (10 + 0.3) X (10 - 0.1)

(x+a)(x-b) = x^2 + (a - b)x - ab

= 10^2 + (0.3 - 0.1) X 10 - 0.3 X 0.1

= 100 + 0.2 X 10 - 0.03

= 100 + 2 - 0.03

= 102 - 0.03

= 101.97

Answer 2

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