Question

oblicz
a)(7^(3 )* 7^(-4)) : 7^(-2)=
b) (3^(-4) : (1/3)2) * (1/3)-1=
c) (1253 * 5-4): (252 * 0,2-3) =
d) √5 * √45 =
e) ∛3 * ∛(-9) =
f) √48 * √12 =

Answer 1

a)

(7³*7⁻⁴):7⁻²=7⁻¹:7⁻²=7¹=7

b)

(3⁻⁴:(1/3)²)*(1/3)⁻¹=(3⁻⁴:3⁻²)*3¹=3⁻²*3¹=3⁻¹=1/3

c)

(125³*5⁻⁴):(25²*0,2⁻³)=(5⁹*5⁻⁴):(5⁴*5³)=5⁵:5⁷=5⁻²=1/25

d)

√5*√45=√225=15

e)

∛3 * ∛(-9) =∛-27=-3

f)

√48 * √12 =√576=24