Question

999×999 = ? By using identity no.5

Answer 1

Answer:

998001

Hope it helps

Step-by-step explanation:

ye identity 2 se hoga

(a-b)^2 = a^2 - 2×a×b + b^2

999 ×999 = (999)^2

(1000-1)^2 = 1000^2 - 2 × 1000 × 1 + 1^2

= 1000000-2000+1

= 998001