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Efimghe
a fost răspuns

Rezolvati in R inecuatia : a) 6x²-7x+2>0

Răspuns :

ai rezolvarea in poza
Vezi imaginea Аноним
6x²-7x+2>0

6x²-7x+2=0
a=6; b=-7; c=2;.
∆=b²-4ac=49-4·6·2=49-48=1
x1,2=(-b±√∆)/2a=(7±1)/12
x1=8/12=2/3
x2=6/12=1/2

x. . . . . . |-∞___1/2___2/3____∞|

6x²-7x+2|+++++0 - - - - 0 ++++++|
.................(———)..............(————)

x€(-∞,1/2)U(2/3, ∞)

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