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Find the values of the following polynomials at a = –2 and b = 3: a2 + 2ab + b2 - Mathematics

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Question

Find the values of the following polynomials at a = –2 and b = 3:

a2 + 2ab + b2

Sum

Solution

Given, a = –2 and b = 3

So, putting a = –2 and b = 3 in the given expressions, we get  

a2 + 2ab + b2 = (–2)2 + 2(–2)(3) + (3)2

= 4 – 12 + 9

= 1

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Chapter 10: Algebraic Expressions - Exercise [Page 322]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 10 Algebraic Expressions
Exercise | Q 66. (a) | Page 322
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