Question

Rezolvati ecuatia:
a)5x²-10x+5=0
b)3x²-5x+2=0
c)x²-6x+8=0
d)x²-4x+4=0
e)x²+2x+6=0
f)x²-14x+33=0

Answer 1

a) a=5 ';b =-10 ; c=5
delta = b la a doua + 4ac
delta = 100 + 100
delta = radical din 200
b) a=3 ; b=-5 ; c=2
delta = -5 la a doua + 4 x 3x2
delta = radical din 49
c) a=1 , b=-6 , c=8
delta = -6 la a doua + 4x1x8
delta = radical din 68
d) a =1 , b=-4 , c=4
delta = -4 la a doua +4x1x4
delta = radical din 32
e) a=1 , b=2, c=6
delta = 2 la a doua + 4x1x6
delta = radical din 28
f) a =1 , b= -14 , c=33
delta = -14 la a doua + 4x1x33
delta = 196 +132
delta = radical din   328