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CBSESecondary School (English Medium) (5 to 8) Class 8
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Syllabus

Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2. 9x2 + 24x + 16 - Mathematics

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Question

Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2. 

9x2 + 24x + 16

Sum
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Solution

We have,

9x2 + 24x + 16

= (3x)2 + 2 × 3x × 4 + 42

= (3x + 4)2

= (3x + 4)(3x + 4)

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Expansion of (a + b)2 = a2 + 2ab + b2
  Is there an error in this question or solution?
Q 89. (xi)
Chapter 7: Algebraic Expression, Identities and Factorisation - Exercise [Page 234]

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NCERT Exemplar Mathematics [English] Class 8
Chapter 7 Algebraic Expression, Identities and Factorisation
Exercise | Q 89. (xi) | Page 234

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