factorise (x+y)³(a+b)-(x+y)(a+b)³
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Answered by
1
Answer:
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Answered by
5
Answer:
(x+y)(a+b)(x+y+a+b)(x+y-a-b)
Step-by-step explanation:
let (x+y)=p
(a+b)=q
then (x+y)³(a+b)-(x+y)(a+b)³
= p³q-pq³
= pq(p²-q²)
= pq(p+q)(p-q)
= (x+y)(a+b)(x+y+a+b)(x+y-a-b)
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