Question

Sol
2. 10. If (-5) is a root of the quadratic equation 2r
+ px + 15 = 0 and the quadratic equation
p(x + x) + k = 0 has equal roots, then find the
values of p and k.​

Answer 1

x= -5

2(-5) + p(-5) + 15=0

-10-5p=-15

-5p = -15+10

-5p = -5

p = 1

p(x+x) + k = 0

1 ( -5-5 ) + k = 0

k = 10

Answer 2

Answer:

p=1 hence prove x = (-5)