Question

cual es el valor de la discriminante de 3x2-7x+2=04x2+4x+1=03x2-7x+5=0

Answer 1

3x2-7x+2=0
a=3; b=-7; c=2
D = b²-4ac
D = (-7)²-4(3)(2)
D = 49-24
D = 25

4x2+4x+1=0
a=4; b=4; c=1
D = b²-4ac
D = (4)²-4(4)(1)
D = 16-16
D = 0

3x2-7x+5=0
a=3; b=-7; c=5
D = b²-4ac
D = (-7)²-4(3)(5)
D = 49 - 60
D = -11