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RS Aggarwal Solutions Class 9 Mathematics Solutions for Factorization of Polynomials Exercise 3C in Chapter 3 - Factorization of Polynomials
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2(𝑥 + 𝑦)^2 − 9(𝑥 + 𝑦) − 5
Answer:
2(𝑥 + 𝑦)^2 − 9(𝑥 + 𝑦) − 5
Let us consider (x + y) = z
So we get,
= 2𝑧^2 − 9𝑧 − 5
We can further write it as
= 2𝑧^2 − 10𝑧 + 𝑧 − 5
By taking out the common terms
= 2z (z – 5) + 1 (z – 5)
= (2z + 1) (z – 5)
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