Question

1. (3k - 2l) (4k - 3l)
2. (-p + 3) (2p - 5)
3. (6a - 3b) (2a - 7b)
4. (3k - 5) (k² + 2k - 6)
5. (x + y) (3x² + xy + 2y²)
tolong dijawab ya guys pliss

Answer 1

Kalikan dengan cara perkalian pelangi
1. (3k - 2l)(4k - 3l)
=> 12k² - 9kl - 8kl + 6l²
=> 12k² - 17kl + 6l²
2. (-p + 3)(2p - 5)
=> -2p² + 5p + 6p - 15
=> -2p² + 11p - 15
3. (6a - 3b)(2a - 7b)
=> 12a² - 42ab - 6ab + 21b²
=> 12a² - 48ab + 21b²
4. (3k - 5)(k² + 2k - 6)
=> 3k³ + 6k² - 18k - 5k² - 10k + 30
=> 3k³ + k² - 28k + 30
5. (x + y)(3x² + xy + 2y²)
=> 3x³+ x²y + 2xy² + 3x²y + xy² + 2y³
=> 3x³ + 4x²y + 3xy² + 2y³

Answer 2

1. 12K²-14lK+6l² 2. -2p²+11p-15 3. 12a²-48ab+21b² 4. 3k³+6k²-18k-5k²-10k+30 = 3k³+k²-28k+30 5. 3x³+x²y+2xy²+3x²y+xy²+2y³ = 3x³+4x²y+3xy²+2y³