If the sum of the zeroes of the quadratic polynomial 3x2-kx+6 is 3, then find
the value of k
Answers
Answered by
1
Answer:
K=9
Step-by-step explanation:
In a general quadratic equation of form
ax
2
+
bx+
c=
0
, sum of roots are by
a
−b
.
In the given quadratic equation,
3x
2
−
kx+
6=
0
a= 3,b= −k,c= 6
Sum of roots
=
a
−b
=
3
−(−k)
=
3
k
and sum of roots is given 3
⇒
3
k
= 3
⇒
k=9
Answered by
3
Answer:
k = 9
Step-by-step explanation:
sum of zeros = α + β = -b/a
-[-k]/3 = k/3
its given that α + β = 3
k/3 = 3
k=9
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