Question

realizati in R ecuatiile de gradul ll forma incompleta a)3x2-12=0 b)2x2-5x=0 c)5x2+8=0

Answer 1

[tex]a) 3x^{2}-12=0, x^{2}-4=0, x^{2}=4, x_{1}=2, x_{2}=-2 \\ b) 2x^{2}-5x=0, x(2x-5)=0, x_{1}=0, x_{2}=\frac{5}{2}\\ c) 5x^{2}+8=0, 5x^{2}=-8, x^{2}=\frac{-8}{5}, nu\, are\, solutii\,reale[/tex]