Answer:
a. 1ab (4 -28+7)
b 2(a² - 183²)
c. cde(12-9-8+6)
d ab(a+b +2 -2-2 -3)
e 5(1- 9a²)
f py- 2p - qz -qy
pqy (1 - 2 -z -1)
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