Question

the value of p for which the qurdratic equation x^2+px+4=0 has equal roots is ______​

Answer 1

Answer:

As roots are equal

then, d=0

or b^2-4ac=0

Where. b=p, a=1 and c=4

p^2-4×1×4=0

p^2-16=0

p^2=16

p=√16

p= +4, -4