Factorise 20a^2- 45b^2 – InterviewSolution

1.

Factorise 20a^2- 45b^2

Answer»

ong>Answer:

20a²-45b²

5(4a²-9b²)

5{(2A)²-(3B)²}

5 (2a+3b) (2a-3b)

Step-by-step EXPLANATION:

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