Question

indentie used in 97x102​

Answer 1

Answer:

I think (100-3)(100+2)

Answer 2

Answer:

97 × 102

= (100-3) (100+2)

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

= (100)^2 + (-3 + 2)(100) + (-3)(2)

= 10000 + (-1)(100) + (-6)

= 10000 - 100 - 6

= 9894.