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B. -P pangkat 2 -P
C.2p pangkat 2+5p+6p+15 = 2p pngkt 2 +11p+17
D. A pngkt 2-2A-A+2= Apngkt2 -3A+2
E.6M(pngkt2)-6MN-14MN+14N(pngkt2) =6Mpngkt2-20MN+14Npngkt 2
Sorry gabisa ngetik pangkat dua nya :D
b. -p (p + 1) = -p^2 - p
c. (p + 3) (2p + 5) = 2p^2 + 5p + 6p + 15 = 2p^2 + 11p + 15
d. (a - 1) (a - 2) = a^2 - 2a - a + 2 = a^2 - 3a + 2
e. (3m - 7n) (2m - 2n) = 6m^2 - 6mn - 14mn + 14n = 6m^2 -20mn + 14n