Question

zadanie z pierwiastków

oblicz:

a) √2 × √18 =

b) √200 ÷ √2 =

c) 7√2 × 6√50 =

d) 3 √75 ÷ √3 =

e) 2∛24 ÷ ∛3 =

f) 3∛4 × 5∛2 =

proszę pomocy :)

Answer 1

√a*√b=√a*b

√a / √b=√a/b

 

a) √2 × √18 = √2*8=√16=4

b) √200 ÷ √2 = √200/2 = √100=10

c) 7√2 × 6√50 = 7*6*√2*50=42*√100=42*10=420

d) 3 √75 ÷ √3 = 3*√75/3= 3*√25=3*5=15

e) 2∛24 ÷ ∛3 =2∛24/3= 2*∛8 = 2*2=4

f) 3∛4 × 5∛2 = 3*5*∛4*2=15*∛8=15*2=30