Question

X square plus 1 has no real zeroes why

Answer 1

Answer:

x²+1=0

x²=-1

x=√-1

x=i which is not belongs to real number set

in another way,

x= (-b± √b²-4ac)/2a

here  

a=1  

b=0

c=1

so,

x=0 ± √0-4/2(1)

=0±√-4/2

=±2i/2

= +i or -i

i belongs to complex numbers.so x²+1 has no real zeroes