Respuesta :

Answer:

640

Step-by-step explanation:

10 x 8^2

10 x 64 = 640

Answer:

10b^2 = 640

Step-by-step explanation:

All you have to do is substitute b for 8.

10 (8) ^2

so 8 x 8 = 64

10 (64) = 640

Hope this helps :)