Exercise 44 Page 422

To evaluate the given expression for r = -3 and s = 5, we should substitute these values into the expression and simplify as much as possible.

2^(-4)r^3s^(-2)

SubstituteII

r= -3, s= 5

2^(-4)( -3)^3 5^(-2)

NegExponentToFrac

a^(- m)=1/a^m

1/2^4 * (-3)^3 * 1/5^2

CalcPow

Calculate power

1/16 * (-27) * 1/25

MultPosNeg

a(- b)=- a * b

- 1/16 * 27 * 1/25

MoveRightFacToNumOne

1/b* a = a/b

- 27/16 * 1/25

MultFrac

Multiply fractions

-27/400