Question

Scrieti numerele urmatoare, introducand factorii sub radical?
a) 3 radical din 7 b)2 radical din 1,5 c)1/5x radical din 50
d)-2 radical din 3 e) -2/3x radical 27 f)-3/5x radical din 5/3
g) 5 radical din 3/5 h) 1,2 radical din 10

Answer 1

Răspuns:

a)3rad7=rad(3^2•7)=rad63

b)2rad1,5=rad(2^2•1,5)=rad6

c)1/5xrad50=rad[(1/5)^2•x^2•50)]=rad(2x^2)

d)-2rad3=[-rad(2^2•3)]=(-rad12)

e)-2x/3•rad27=[-rad(4x^2/9•27)]=(-rad12x^2)

f)-3x/5•rad5/3=[-rad(9x^2/25•5/3)]=(-rad3x^2/5)

g)5rad3/5=rad(5^2•3/5)=rad15

h)1,2rad10=rad(1,2^2•10)=rad14,4