Question 173529
2a to the negative 3rd power b to the 1st power if a= 2 and b= 12

Do you mean 2a^(-3)(b^1)?

If so, here is the solution:

Replace a with 2 and b with 12

2(2)^(-3) (12^1))

2(1/8)(12)

(1/4)(12) = 3