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Evaluate using algebraic formula: 4.82 + 2(4.8)(0.2) + (0.2)2 - Mathematics

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Question

Evaluate using algebraic formula:

4.82 + 2(4.8)(0.2) + (0.2)2

Evaluate
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Solution

4.82 + 2(4.8)(0.2) + (0.2)2

The equation is already in the form (a + b)2 with a = 4.8, b = 0.2

= (4.8 + 0.2)2

= (5.0)2

= 25

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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. (vi) | Page 32
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