Question

(197)²
class 8 algebric expression and identities ​

Answer 1

Answer:

By using identities,

By using identities,Firstly,

(200 - 3)² is the correct form

so,

(a-b) ² = a²-2ab+b²

Substituting values,

(200-3)² = (200)²-2×200×3+(3)²

= 40000-1200+9

= 38800+9

= 38809

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