Question

If 2 is a root of the equation xsquare + kx +12 =0 and equation xsquare +kx +q =0 has equal roots find the value of q

Answer 1

Answer:

16

Step-by-step explanation:

x^2 + kx + 12 = 0

x = 2

2^2 + k*2 + 12  = 0

4 + 2k + 12 = =

k = -8

x^2 - 8x + q = 0

it has equal roots so

ax^2 + bx + c = 0 then b^2 - 4ac = 0 for equal roots

(-8)^2 = 4*1*q

64 = 4q

q = 16

Answer 2

Step-by-step explanation:

see attached file

I hope this is helpful for you