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= -3a +6b -15
b. xy(x² -4)
= x³y -4xy
c. 1/2(2x +6)
= x +3
d. 2(x +3)
= 2x +6
e. -3(2a +5)
= -6a -15
f. -p(p² -3)
= -p³ +3p
Itu jawabannya.