Question

If the sum of the zeroes of the quadratic polynomial 5x^2 – kx + 6 is – 2, then find
the value of 'k'​

Answer 1

Answer:

k= -13.is correct answer.

Answer 2

Question:

• If the sum of the zeroes of the quadratic polynomial 5x² - kx + 6 is -2, then find the value of k.

Solution:

Need to find: Find the value of k ?

Step-by-step explanation:

As we know that,

• ax² + bx + c = 0 ➠ $\rm{ \frac{ - b}{a} = sum \: of \: zeros}$

❍Let us consider that a = 5 , b = -k and c = 6

Applying the known values,

$\dashrightarrow$5x² - kx + 6 = -2

$\dashrightarrow\rm{\frac{- ( - k)}{5}} = - 2$

$\dashrightarrow\rm{\frac{k}{5} = - 2} \\ \\ \dashrightarrow \rm{k = - 2 \times 5} \\ \\ \dashrightarrow \rm{k = - 10}$

• Therefore,The value of k is -10.

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