Question

If 2 is a root of the equation x²+kx+12=0and the equation x²+kx+q=0 has equal root. find the value of q​

Answer 1

Answer:

equal roots means 4^2 - 4ac = 0 use this u will for sure get your answer

Answer 2

Answer:

q = 16

Step-by-step explanation:

p(x) = x² + kx + 12 = 0

p(2) = 4 + 2k +12 = 0

k = -8

Now putting k in 2nd equation

q(x) = x² - 8x + q = 0

we know that ,

for equal roots

b²- 4ac = 0

64 - 4q = 0

4q = 64

q = 16