Question

what is the expression written using each base only once?

(-4)^-6 * (-4)^7

A. 4^13
B.-4
C.13
D.1


Find the simplified form of expression.Give your answer in scientific notation.

(3 x 10^6) (8 x 10^-4)

A. 1.1 x 10^3
B.2.4 x 10^3
C.1.1 x 10^-23
D.2.4 x 10^-23

Answer 1

1. (-4)^-6 * (-4)^7 = (-4)^(-6+7) = (-4)^1 =
  B. -4

2. (3*10^6)*(8*10^-4) = (3*8)*10^(6-4) = 24*10^2 =
  B. 2.4*10^3