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Evaluate using algebraic formula: 1042 - Mathematics

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Question

Evaluate using algebraic formula:

1042

Evaluate
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Solution

1042

Let’s take it as (100 + 4)2

(100 + 4)2 = (100)2 + 2(100)(4) + (4)  ...[Using (a + b)2 = a2 + 2ab + b2]

(100 + 4)2 = 10,000 + 2(400) + 16

(100 + 4)2 = 10,000 + 800 + 16

∴ (100 + 4)2 = 10,816

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Chapter 3: Expansions - EXERCISE A [Page 32]

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B Nirmala Shastry Mathematics [English] Class 9 ICSE
Chapter 3 Expansions
EXERCISE A | Q 2. (i) | Page 32
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