4. (a - b)2 + (a - b)
Answers
Answered by
1
Answer:
(a-b)2+(a-b)=2a-2b+a-b
=3a-3b
=3(a-b)
Answered by
1
Answer:
= 2a-2b+a-b
=3a-3b
=3(a-b)
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