Use Identities to Evaluate : (101)2 - Mathematics

Use identities to evaluate : (101)²

Sum

(101)²
(101)² = (100 + 1)²
We know that,
(a + b)² = a² + b² + 2ab
∴ (100 + 1)² = 100² + 1² + 2 x 100 x 1
= 10,000 + 1 + 200
= 10,201

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Chapter 4: Expansions (Including Substitution) - Exercise 4 (A) [Page 57]

Chapter 4 Expansions (Including Substitution)
Exercise 4 (A) | Q 2.1 | Page 57

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(99)³

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