Question

Calcule

a) (1 -2/5)²

b) (1/5)⁴

c)(0,03 - 1/2³)

d) (0,01³)

Answer 1

a) (1 -2/5)²=
=1²-2²/5²
=1-2.2/5.5
=1-4/25
=25/25-4/25
=21/25

b) (1/5)⁴=
=1⁴/5⁴
=1/5.5.5.5
=1/625

c)(0,03 - 1/2³)=
=3/100 -1.1.1/2.2.2
=3/100-1/8
=6/200-28/200
=-22/200
=-11/100
=0,11

d) (0,01³)=
=(1/100)³
=1.1.1/100.100.100
=1/1000000
=$1x10^{-6}$