Question

If the roots of the quadratic equation ? + 6x + k =0 are equal, then the value
of k is
A.9
B. -9
C. 8
D. 5​

Answer 1

Answer:

9

Step-by-step explanation:

x²+6x+k=0

since it has equal roots

therefore

b²-4ac=0

(6)²-4*1*k=0

36-4k=0

36=4k

36/4=k

9=k

k=9

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