$-2 left(-1 frac 1 4 right)=$ July 8, 2019 16 32 64 128 $- 2 left (- 1 frac 1 4 right )=$ What is $ left(1 frac 1 2 right)^4$ expressed as a mixed number Log _ 2 left ( frac 1 4 right 1 frac 2 7 div left(-2 frac 1 4 right) = 4 frac 1 2 div left(-1 frac 3 7 right) = 1 - 2 = 4