Question

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

Answer 1

Answer:

9

Step-by-step explanation:

hope this answer is helpful

Answer 2

Answer :-

• Value of k in quadratic polynomial 3x² - kx + 6 => 9

To Find :-

• Value of k in the quadratic polynomial 3x² - kx + 6

Given :-

• Sum of zeros = 3

Step By Step Explanation :-

As given in the question the sum of zeroes of the quadratic polynomial 3x² – kx + 6 is 3.

As we know ⤵

$\boxed{ \bf{ \green{Sum\:of\: zeros=\cfrac{ - b}{a} }}}$

So by substituting the values ⤵

$\implies\sf3 = \cfrac{ - ( - k)}{3} \\ \\ \implies\sf3 = \cfrac{k}{3} \\ \\ \implies\sf3 \times 3 = k \\ \\ \implies\bf9 = k$

Therefore the value of k = 9

More to Know :-

• Polynomial :- An algebraic expressions in which the variable involved having non negative integral power is known as polynomial.

• General term of a quadratic polynomial = ax² + bx + c

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