Math, asked by appannaashik98, 1 month ago

3.
If the roots of the quadratic equation x² + 6x + k = 0 are equal, then the value
of 'k' is :
B. -9
A. 9
C. 8.
D. 5​

Answers

Answered by riyabante2005
6

x² + 6x + k = 0

compare equation with ax²+bx+c=0

a=1,b=6,c=k

the roots of quadratic equation is real and equal.

b²-4ac=0

6²-4×1×k=0

36-4k=0

-4k=-36

4k=36

k=36/4

k=9

Answered by samaira35v
3

Answer:

The answer is 9

Good day mate

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