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Question

The value of (x+1y)a(x1y)b(y+1x)a(y1x)b dis equal to

A
(xy)a+b
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B
(yx)a+b
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C
(xy)a+b
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D
None of these
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Solution

The correct option is A (xy)a+b

Consider given the expression,


(x+1y)a(x1y)b(y+1x)a(y1x)b

(xy+1y)a(xy1y)b(xy+1x)a(xy1x)b

(xy+1)aya×(xy1)byb(xy+1)axa×(xy1)bxb

1ya×1yb1xa×1xb

xa+bya+b

(xy)a+b


Hence, this is the answer.

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