Math, asked by gargaanya2007, 4 months ago

20x²-45y² factorise the following

Answers

Answered by 1976gargib

5

Answer:

5(2x+3y)(2x-3y)

Step-by-step explanation:

20x²-45y²

=5(4x²-9y²)

=5{(2x)²-(3y)²}

=5(2x+3y)(2x-3y)

[As a²-b²=(a+b)(a-b)]

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