please solve these two questions....!!!
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Step-by-step explanation:
6.
a)
-5a²b-3a²b
-8a²b
b)
6pq-(-8pq)
14pq
7.
a)
3a-5ab+b+4a-2b+ab-3a-2b+5ab
-3b+4a+ab
b)
x³-x+2+3x²+5x³-x+1+x²-2x+5+3x+x²+x³
7x³+5x²-4x+8
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