factorise x^2(a-b)+y^2(b-a)
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Answer:
(a - b)(x + y)(x - y)
Step-by-step explanation:
⇒ x^2(a - b) + y^2(b - a)
⇒ x^2(a - b) + y^2[ - (a - b) ]
⇒ x^2(a - b) - y^2(a - b)
⇒ (a - b)(x^2 - y^2) {a^2-b^2=(a+b)(a-b)}
⇒ (a - b)(x + y)(x - y)
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