Respuesta :

asmaNasr

Step-by-step explanation:

[tex] \frac{3 {b}^{2} \times 12 {p}^{7} {b}^{19} }{2} = \frac{3 {b}^{21} \times 12 {p}^{7} }{2} = \\ = 3 {b}^{21} \times 6{p}^{7} = \\ = 18 {b}^{21} \times {p}^{7} [/tex]