Question

nature roots of b2 -4ac=0 example​

Answer 1

Answer:

-b+/-root over b2 -4ac÷2a

Answer 2

Answer:

real and equal

Step-by-step explanation:

b²-4ac=0 ,then roots are real and equal

for example,x²-4x+4=0

a=1  b=-4  c=4

taking discriminant , d=b²-4ac

                                    =(-4)²-4*1*4

                                    =16-16

                                    =0

x²-4x+4=0

x²-2x-2x+4=0

x(x-2)-2(x-2)=0

(x-2)(x-2)=0

x=2 and x=2

x=2

roots are real and equal

so ,b²-4ac has real and equal roots