Question

Q.1. Factorize the expression: (a) 25a2 – 20ab + 4b2 – 16 c2​

Answer 1

Answer:

the answer to this question is

[(5a+2b)^2+4c][(5a+2b)^2-4c]

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Answer 2

the expression can be simplified as :

(5 a - 2 b)² - (4c)²

now apply a²-b² rule

(5a-2b+4c)(5a-2b-4c)

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