Question

Sa se rezolve in multimea numerelor reale,ecuatia:
x la patrat-2ax+a la patrat-1=0, Oricare ar fi a apartine R

Answer 1

delta = 4a^2 - 4(a^2 - 1) = 4a^2 - 4a^2 + 4 = 4
radical din delta = 2

x1 = (2 - 2)/2 = 0
x2 = (2 + 2)/ 2 = 2