Question

factorise x² + 2xy + y ² - a² + 2ab-b²

Class IX​

Answer 1

Answer:

by using identity of a + b whole square the factorization will be x+ y whole square minus a minus b whole square

Answer 2

Answer:

(x+y)^2 - (a+b)^2

then from the formula a^2-b^2=(a+b)(a-b)

we can factorise it as

(x+y+a+b)(x+y-a-b)