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=5p+5
b.= 9m+4mn-12m-7mn
= -3m - 3mn
c= -3a^ + 5ab - 11
2. a. = 4m-5-6m+8
=2m+3
b.=9p^ - 4pa -q^ -4p^+5pq - 3q^
= 5p^ - 4q^+pq
c.= -16a -6b -4a+9b
= -20a +3b
d.= -3x pangkat3 - 2x^ - 3
yg no 3 gk tau