Factorise: (x+y) (a+b) + (x-y) (a+b)
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Answer:
2x(a+b)
Explanation:
(x+y) (a+b) +(x-y) ( a+b)
= (a+b) [( x+y)+(x-y)]
= (a+b) [ x+y+x-y]
= (a+b) [ 2x]
= 2x(a+b)
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