Question

a) 3x la 2 plus 2 egal 1 radical 2 plus (-1)la puterea 2
b) x la a 2 pus 1 egal(radical3) la a 2
c)x la a 2 egal 4 supra 25

Answer 1

Raspuns:

Explicație pas cu pas:

v=radical

3x^2+2=1v2+(-1)^2=3x^2+2=v2+(-1)^2=3x^2=v2+1-2=3x^2=v2-1=x^2=v2/3-1/3=x^2=v2-1/3=x=v3v2-3/3

____________________

x^2+1=(v3)^2=x^2+1=3=x^2=3-1=x^2=2=x=v2

_________________

x^2=4/25

x=+2/5

x=-2/5

x=2/5

Answer 2

Pozele contin rezolvările