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ajutati-ma ,va rog
X^2+2x-3
P.S am nevoie si de grafic


Răspuns :

[tex] x^{2} +2x-3=0[/tex]
Δ=b²-4ac
Δ=2²-4×1×(-3)=4+12=16
[tex]x_{1,2}= \frac{-b+- \sqrt{delta} }{2a} [/tex]
[tex]x_1= \frac{-2+4}{2} = \frac{2}{2} =1[/tex]
[tex]x_2= \frac{-2-4}{2} = \frac{-6}{2} =-3[/tex]