Math, asked by asadrahmani1969, 29 days ago

Factorise a²-5b²-4ab

Answers

Answered by amitsharma777222999

1

Step-by-step explanation:

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

=(a-2b)^2-9b^2=(a-2b)^2-(3b)^2

=(a-2b+3b)(a-2b-3b)

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