Question

Using identity ,evaluate 9972​

Answer 1

Answer:

Answer

(997)

2

= (1000−3)

2

= (1000)

2

−2×1000×3+(3)

2

[Using, (a−b)

2

=a

2

−2ab+b

2

]

= 1000000−6000+9

= 1000009−6000

= 994009

Answer 2

Step-by-step explanation:

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