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The joint equation of the straight lines...

The joint equation of the straight lines `x+y=1` and `x-y=4`, is

A

`x^(2)-y^(2)=-4`

B

`x^(2)-y^(2)=4`

C

`(x+y-1)(x-y-4)=0`

D

`(x+y+1)=(x-y+4)=0`

Text Solution

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The correct Answer is:
C
NA
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