Question

factorise (ab)² -(xy)²​

Answer 1

Answer:

   (ab)² - (xy)²

⇒ (ab - xy) (ab + xy)                     {Identity used = (a - b) (a + b) = a² - b²}

Hope it helps...

Answer 2

Answer:

(AB+XY)(AB-XY)

Step-by-step explanation:

LET AB BE U

LET XY BE P

THEN THE QUESTION BECOMES (U^2)-(P^2)

THEN WE USE THE FORMULA (A^2)-(B^2)=(A+B)(A-B)

SO , (U^2)-(P^2)=(U+P)(U-P)

NOW SUSBTITUBE THE VALUE OF U AND P IN THE EQUATION

(AB+XY)(AB-XY)