2.(5M-1) (M+4)
3.(2p+q) (p-44)
4.(a-3) (a pangkat 2 +4a+5)
5.(3k-5) (k pangkat 2 +k-6)
1.2×y (×-4)
Jawaban Terkonfirmasi
1. 2xy (x -4)
= (2xy × x) (2xy × -4)
= 2x²y – 8xy
2. (5m – 1) (m + 4)
= (5m × m) (5m × 4) (-1 × m) (-1 × 4)
= 5m² + 20m – m – 4
= 5m² + 19m – 4
3. (2p + q) (p – 44)
= (2p × p) (2p × -44) (q × p) (q × -44)
= 2p² – 88p + pq – 44q
4. (a – 3) (a² + 4a + 5)
= (a × a²) (a × 4a) (a × 5) (-3 × a²) (-3 × 4a) (-3 × 5)
= a³ + 4a² + 5a – 3a² – 12a – 15
= a³ + 4a² – 3a² + 5a – 12a – 15
= a³ + a² – 7a – 15
5. (3k – 5) (k² + k – 6)
= (3k × k²) (3k × k) (3k × -6) (-5 × k²) (-5 × k) (-5 ×-6)
= 3k³ + 3k² – 18k – 5k² – 5k + 30
= 3k³ + 3k² – 5k² – 18k – 5k + 30
= 3k³ – 2k² – 23k + 30