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1. 3k kali 4k + 3k kali -3l - 2l kali 4k -2l kali -3l = 12k kuadrat-9kl-8lk+6l kuadrat
2. -p.2p -p.5 + 3.2p+3.-5 = -2pkuadrat + 5p + 6p-15
= -2pkuadrat + 11 p - 15
3. 6a.2a+6a.-7b-3b.2a-3b.-7b = 12a kuadrat - 42ab-6ab+21ab kuadrat
= 12a kuadrat-47ab+21ab kuadrat
4. 3k.k kuadrat + 3k.2k + 3k.-6 -5.k kuadrat -5.2k-5.-6 = 3k pangkat3 + 6k kuadrat- 18k-5k kuadrat - 10k + 30
= 3k pangkat3 + 6k kuadrat - 5k kuadrat - 18k-10k+30
3k pangkat3 +k kuadrat-28k+30
5. x.3x kuadrat + x.xy+ x.2xy kuadrat + y.3x kuadrat + y.xy + y.2xy kuadrat
= 3x pangkat3 + x kuadrat y + 2x kuadrat y kuadrat + 3x kuadrat y + xy kuadrat + 2xy pangkat3
yg titik itu berarti dikali ya, misalnya x.y=xy
maaf kalau penulisannya gitu, membacanya pelan2 aja