Question

Evaluate 999×999 using identity

Answer 1

The answer is 998001
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Answer 2

Answer:

Step-by-step explanation:

• 999^2

• (1000 - 1)^2

• Using identity, (a - b)^2 = a^2 + b^2 -2ab

• (1000 - 1)^2

• (1000)^2 + (1)^2 - 2(1000×1)

• 1000000 + 1 - 2000

• 1000001 - 2000

• =998001