Question

equation x2 +5x + 8=0 has no real roots​

Answer 1

x^2+5x+8=0

a=1,b=5,c=8

b^2-4ac=5^2-4×1×8

=25-32

=-7

b^2-4ac<0

therefore , x^2+5x+8=0 has no rea roots