Question

if -5 is a root of quadratic equation 2x^2 +px-15 =0 and the quadratic equation p(x^2 +x) +k =0 has equal roots , find the value of k​

Answer 1

Answer:

as the nature is equal

then b(square) -4ac

-5 = (1) square minus 4(1) (k)

-5 = 1-4k

-5-1 = - 4k

-6= - 4k

k = 6/4

k = 3/2