Question

gn="absmiddle" class="latex-formula">
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Answer 1

I believe it should be =(1-x) multiple by (y-1)
(1-x) x (y-1)

Answer 2

Answer:

(x-1) (-y+1)

Step-by-step explanation:

y-xy+x-1

(-yx+y) (x-1)

-y(x-1)  (x-1)

(-y+1) (x-1)