Answer:
B
Step-by-step explanation:
I don't know how to explain it, but I hope I got it right and that it helped you.
Answer:
c...
Step-by-step explanation:
Answer:
A.
Step-by-step explanation:
you have to find the discriminant
b²-4ac for each equation
if discriminant < 0 no real solutions because will be negative under the squareroot whhan you try to find the roots
if discriminant = 0 there is only one solution
if discriminant > 0 two real solutions
for your given problems
A. discriminant =(-2)²-4*2*15 will be negative
Answer:
Step-by-step explanation:
=(3)2+(5.5)2‾‾‾‾‾‾‾‾‾‾‾‾√
d=(3)2+(5.5)2
=9+30.25‾‾‾‾‾‾‾‾‾√
d=9+30.25
=3‾√9.25
d=39.25
=6.264982