Question

15. The nature of roots of quadratic equation x2 -2x+4=0:​

Answer 1

b²-4ac=0,x²-2x+4=0,a=1,b=-2,c=4, Put the value of a,b,c in b²-4ac=0 , (-2)² -4×1×4 =0, 4-16=0,-12 If b²-4ac<0 so it is a no real roots -12<0 so -12 is a no real roots