NCERT Class 9 Solutions: Polynomials (Chapter 2) Exercise 2.5 – Part 2 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Q-4 Expand each of the following using suitable identities:

Solution:

Mathmatical Identities for Squares of Trinomials

Using identify

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Using identify

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Using identify

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Using identify

Here

Using identify

Here

Using identify

Here

Q-5 Factorize:

Solution:

Using identify

Using identify

Q-6 Write the following cubes in expanded form:

Solution:

Important Identities with Cubes

Using identify

Using identify

Using identify

Using identify

Q-7 Evaluate the following using suitable identities:

Geometric Interpretation of a + B Cubed

Solution:

Using identity

Using identity

Using identity

Q-8 Factorize each of the following:

Solution: