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Question
Expand:
(10 + y)2
Sum
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Solution
(10 + y)2
Using the identity (a + b)2 = a2 + 2ab + b2
= (10)2 + 2 × 10 × y + (y)2
= 100 + 20y + y2
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Chapter 15.5: Miscellaneous Problems : Set 2 - Exercise [Page 100]
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