Question

Write all the values of p for which the quadratic equation x2 +px+16=0 has equal roots. Find the roots of the equation so obtained​

Answer 1

Answer:

p=±8

Step-by-step explanation:

For equal roots, discriminant should be equal to 0.

Discriminant=b^2-4ac=p^2-16*4=0

p^2=(8)^2, p=8 or - 8

Roots of the equation are x=4 if p=8 and x=-4 if p=-8