Question

Factorise a^2-(2a+3b)^2

Answer 1

Answer:

Hello dear ! you question seems to be

a² - ( 2a + 3b )²

We need a formula which is a² - b² = ( a + b ) ( a - b )

a² - ( 2a + 3b )²

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

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

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

thanks..!!

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