Question

aflati DVA a ecuatiilor:
a)$\frac{2-x}{x}=3$
b)$x^{2} -1=0$
c)$\sqrt{x} +2=6$
d)3x+5=x+1

Answer 1

a. 2 supra x minus x supra x = 3 <=> 2 supra x minus 1 = 3 <=> 2 supra x = 2 => x=1
b. $x^{2}$ - 1=0 <=> $x^{2}$=1 => x=1
c. $\sqrt{x}$ = 4 => x=2
d. 3x-x = 6 => x=2. 
Cu placere.