subtract
1. 6xy from -12xy
2. a(b-5) from b(6-a)
3. 5a²-7ab+5b from 3ab-2a²-2b
4. 8y-y²-4 from 3y²+5y-4
Answers
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Answer:
I) -12xy -6xy
= - 18xy
II) b(6-a) -a(b-5)
= 6b-ab-ab+5a
= 6b-2ab+5a
= 2b(3-a) +5a
III) (3ab-2a²-2b) - (5a²-7ab+5b)
= 3ab-2a²-2b-5a²+7ab-5b
= -7a²+10ab-7b
= a(-7+10b)-7b
IV) (3y²+5y-4) - (8y-y²-4)
=3y²+5y-4-8y+y²+4
= 4y²-3y
= y(4y-3)
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