Răspunsuri

2014-06-13T13:32:57+03:00
A=2
b=5
c=6

Δ=25 -2*12= 25-24=1

x1;x2=  (-5 +/- √1)/2*2=   (-5 +/-1)/4

x1= (-5-1)/4= -6/4= -3/2

x2= (-5+1)2/= -6/2=-3

2x²+5x+6 =2 (x+3/2)(x+3)= 2(2x+3)/2 *(x+3)=  (2x+3)(x+3)
1 5 1