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RS Aggarwal Solutions Class 9 Mathematics Solutions for Factorization of Polynomials Exercise 3A in Chapter 3 - Factorization of Polynomials

Question 12 Factorization of Polynomials Exercise 3A

𝒂^𝟑𝒃 − 𝒂^𝟐𝒃 + 5ab – 5b

Answer:

𝑎^3𝑏 − 𝑎^2𝑏 + 5ab – 5b

By taking 𝑎^2𝑏 common in the first term and 5b as common in the second term

= 𝑎^2𝑏(𝑎 − 1) + 5𝑏(𝑎 − 1)

So we get,

= (a – 1) (𝑎^2𝑏 + 5b)

By taking b as common

= (a – 1) b (𝑎^2 + 5)

So we get,

= b (a – 1) (𝑎^2 + 5)

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