Question

xy-x-y+1=


please answer this​

Answer 1

We factor this expression by making groups of 2 terms

=

(

x

y

+

x

)

+

(

−

y

−

1

)

Now we take the common factors out from each group

=

x

(

y

+

1

)

−

1

(

y

+

1

)

(

y

+

1

)

is a common factor to each of the terms now:

=

(

y

+

1

)

(

x

−

1

)

(

y

+

1

)

(

x

−

1

)

is the Factorised form of

x

y

+

x

−

y

−

1

Answer 2

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DONE

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