Question

find the value of 97×103 using sutable identity​

Answer 1

Answer:

9991

Step-by-step explanation:

using a^2 - b^2= (a-b)(a+b)

97×103

(100-3)×(100+3)

(100)^2- (3)^2

10000-9

9991

Answer 2

97×103 can be written as (100-3)×(100+3)

${100}^{2} - {3}^{2} \\ 10000 - 9 \\ = 9991$

Indentity used:

${a}^{2} - {b}^{2} = (a + b) \times (a - b)$

Hope this helps!