Make it factorise with using formula if needed...
1+ab-a-b
Answers
Answered by
1
1+ab-a-b
= ab-a-b+1
= a(b-1)-1(b-1)
= (b-1)(a-1)
Please mark me in the brainlist ✌️✌️✌️✌️✌️✌️
Answered by
1
1-a-b+ab
=1(1-a)- b(1-a)
=(1-a)(1-b)
Please mark me as brainliest.
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