Question

If x=-2 is a root of the equation 3x2 +7x+p=0 find the value of k so that
the roots of the equation x2+k(4x+k-1)+p=0 are equal.​

Answer 1

Answer: p=2

Step-by-step explanation:

x=-2 is a root of the equation 3x^2 +7x+p= 0

Put, x = -2 in 3x^2 +7x+p= 0, we get

3(-2) ^2+7(-2) +p=0

3(4) -14+p=0

12-14+p=0

-2+p=0

So, p= 2