Question

please step by step​

Answer 1

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________________________

(797)²

we can write it as ,

( 800 - 3 )²

we know the identity,

( a - b )² = a² + b² - 2ab

So, by using this identity

→ (800)² + (3)² - 2 (800) (3)

→ 640000 + 9 - 4800

→ 635209

Answer 2

1. there you go.... ... hope you got it on time