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The expression a (x^(2)-y^(2))-b x y adm...

The expression `a (x^(2)-y^(2))-b x y` admits two linear factors for

A

a.`a+b=0`

B

b.`a=b`

C

c.`4 a=b^(2)`

D

d.all a and b

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The correct Answer is:
D
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