Question

Using the Identity ( a − b ) 2, find 999 2​

Answer 1

Step-by-step explanation:

$sol {}^{n}$

$999 {}^{2}$

$= (1000 - 1) {}^{2}$

$= 1000 {}^{2} - 2 \times 1000 \times 1 + 1 {}^{2}$

$= 1000000 - 2000 + 1$

$= 998001$