c) 4x-32+x2-8x=-4x-32+x2
d) 3a2+3ab-2ab-2b2=3a2-2b2+ab
e) (2b-6c)(b+3c)=2b2+6bc-6bc-6c2=2b2-6c2
f) (a3-a2b+ab2-b3)*5=5a3-5a2b+5ab2-5b3
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c) 4x-32+x2-8x=-4x-32+x2
d) 3a2+3ab-2ab-2b2=3a2-2b2+ab
e) (2b-6c)(b+3c)=2b2+6bc-6bc-6c2=2b2-6c2
f) (a3-a2b+ab2-b3)*5=5a3-5a2b+5ab2-5b3