Question

Solve this????????????​

Answer 1

Answer

$(97) \times (103) \\ =( 100 - 3) \times (100 + 3) \\ by \: using \: identity \: \\ (x + y)(x - y) = x {}^{2} - y {}^{2} \\ = 100 {}^{2} - 3 {}^{2} \\ = 10000 - 9 \\ = 9991$

Answer 2

Step-by-step explanation:

$\bf(97) \times (103)$

$\bf \: (100 - 3)(100 + 3)$

we know that,

(a+b)(a-b) = a²-b²

$\bf \: {100}^{2} - {3}^{2}$

$\bf \: 10000 - 9$

$\bf \: 9991$