Factories a(a-1)-b(b-1)
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4
ANSWER-:: =》
=》a (a-1) - b (b-1)
=》a×a-a×1-b×b+b×1
=》a^2-a-b^2+b
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9
Step-by-step explanation:
Answer:-
a(a-1)-b(b-1)
a²-a-b²-b
a(a-1)-b(b+1)
a²-2ab+b²
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