For what value of k , the quadratic equation kx2
+ 3x + 4 = 0 have equal roots.
Answers
Answered by
1
Given:Roots are equal
⇒ Discriminant=0
⇒b
2
−4ac=0 where a=3,b=−k
3
,c=4
⇒(−k
3
)
2
−4×3×4=0
⇒3(k
2
−16)=0
⇒k
2
−16=0
∴k=4,−4
Answered by
0
Answer:
9/16
Explanation:
b2 -4ac =0
b= 3
a=k
c= 4
> b2-4ac
... 3^2-4×k×4=0
...9-16k =0
...9=16k
....9/16=k
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