factorise (x+y)(a+b)+(x-y)(a+b)
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Answer:
(y-x) (a-b)
Step-by-step explanation:
a(x+y) +b(x-y)
ay-ax-bx+by
ay-by-ax+bx
y(a-b) -x(a-b)
(y-x) (a-b)
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