perkalian aljabar 1. (8a+5)(a+3) 2. (2a+3b)(3a-4b) 3.(5a+2b)2 4.(3a-4b) 2 5. 2(2c-3d) 2

gw lebih ngertinya nomor 3 ama 4

3. (5a+2b)2
=(5a X 2)+(2b X 2)
=10a + 4n
4.(3a-4b)2
= (3a X 2)-(4b X 2)
=6a-8b
Maaf kalau jawabannya salah :)

1. 8a^2+24a+5a+15
= 8a^2+29a+15
2.6a^2-8ab+9ab-12b^2
= 6a^2-12b^2+ab
3.10a+4b
4.6a-8b
5.(4c-6d) 2
= 8c-12d