Question

factorise y²-(a+b)y+ ab.... plz help me it's urgent​

Answer 1

Answer:

use identity

Step-by-step explanation:

(x+a)×(x+b)=x^2+(a+b)x+(a×b)

convert it into this form:

[y+(-a)] [y+(-b)]

Answer 2

Answer:

(y-a)(y-b)

Step-by-step explanation:

y²-(a+b)y+ab

[multiplying y with (a+b) ]

=y²-(ay+by)+ab

[changing sign on opening bracket]

=y²-ay-by+ab

[taking like terms common]

=y(y-a)-b(y-a)

[using distributive property]

=(y-a)(y-b)

Hope it helps you...

Pls mrk me brainliest...