Question

If the sum of the zeroes of the quadratic polynomial 3x2-kx+6 is 3, then find
the value of k.
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Answer 1

Answer:

Compare the following equation with

ax^2 + bx +C

Then, sum of the zeroes is 3

we know that, -b/a=3

where b= -k and a= 3

therefore, -(-k) /3 =3

k =3×3

k= 9