1.

2. Factorise: (m + a)(n-b) -(m+b)(n-a)​

Answer»

ANSWER:

(m+a)(n−b)−(m+b)(n−a)

⇒(mn+na−mb−ab)−(mn+nb−ma−ab)

⇒mn+na−mb−ab−mn−nb+ma+ab

⇒na−nb+ma−mb

⇒n(a−b)+m(a−b)

⇒(a−b)(m+n)

Step-by-step EXPLANATION:

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