Question

a^2 - 5b + ab - 25 factorise the following equation

Answer 1

Hey Mate !

Here is your solution :

= a² - 5b + ab - 25

Rearranging the terms ,

= a² - 25 + ab - 5b

Taking out b as common from last 2 terms ,

= a² - 25 + b ( a - 5 )

= a² - 5² + b ( a - 5 )

Using identity :

[ ( a² - b² ) = ( a + b ) ( a - b ) ]

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

Taking ( a - 5 ) as common ,

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

Rearranging the terms :

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

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Hope it helps !! ^_^

Answer 2

Answer:

hey mate here's your answer

hope it helps