find the value of k for quadratic equation k x square (2k+4) x+9=0, so that they have two equal roots.
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6
Answer:
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Answered by
11
Answer:
k=1
Step-by-step explanation:
kx*+(2k+4)x+9=0
kxk+2kx+4x+9=0
By comparing ax*+bx*+c=0
- D=b*-4ac
(6k)*-4(k)(9)
36k*-36k=0
36k*=36k
36k=36
k=36/36
k=1
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