Question

2) Calcule

a) (-1/9)²

b) (+1/4)²

c) (-1/2)

d) (-0,7) ³

Answer 1

a)(-1/9)² = +1/81
b)(+1/4)² = +1/16
c)(-1/2)² = + 1/4
d)(-0,7)³ = (-0,7).(-0,7).(-0,7) =  - 0,343