Question

Rezolvati in R inecuatia $x^{2}$ + 4x + 3 $\geq$ 0

Answer 1

Răspuns:

x²+4x+3≥0

4±√[(-4)²-4×(1×3)]/2×1=4±√(16-4×3)/2=4±√4/2

x=(4±2)/2

x=2±1

x=2+1=>x=3

x=2-1=>x=1

-b±√(b²-4(ac)]/2a

Answer 2

Răspuns:

MS pentru puncte chiar am nevoie ms