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m²+3m-4=0
m1 si m2=?


Răspuns :

m² + 3m - 4 = 0
Δ = (-3)² - 4 * 1 * (-4) = 9 + 16 = 25. √25 = 5.
[tex]m_{1} [/tex] = [tex] \frac{- 3 + 5}{2 * 1} [/tex] = [tex] \frac{2}{2} [/tex] = 1.
[tex] m_{2} [/tex] = [tex] \frac{-3 - 5}{2 * 1} [/tex] = [tex] \frac{-6}{2} [/tex] = -3.
S = {-3, 1}