Question

factorise xy-x-y+1
plz tell if anyone know ​

Answer 1

Answer:

(x-1) (y-1)

Step-by-step explanation:

xy-x-y+1

x (y-1) -1 (y-1)

(x-1) (y-1)

Answer 2

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xy-x-y+1

=(xy-x)+(-y+1)

=x(y-1)-1(y-1)

=(x-1)(y-1)

Thanks for proving my maths

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