Question

Rezolvati va rog in metoda reducerii e urgent dau 13 puncte
{X+4y+2=0
{2x-4y+1=0

Answer 1

Mult succes în continuare!

Answer 2

[tex]\it \begin{cases} \it x+4y+2=0 \\ \\ \it2x-4y+1=0\end{cases} \\ --------- \\ 3x\ \ \ \ \ \ \ \ \ \ +3=0|_{:3} \Rightarrow x+1=0 \Rightarrow x = -1\ \ \ \ (*) \\ \\ x+4y+2=0 \stackrel{(*)}{\Longrightarrow} -1+4y+2=0 \Rightarrow 4y = -1\Rightarrow y=-\dfrac{1}{4}[/tex]

[tex]\it \ \ S: \begin{cases}\it x = -1\\ \\ \it y=-\dfrac{1}{4} \end{cases}[/tex]