Question

If the sum of zero of the polynomial f(x) = x2 - 8x + k where x = 2, find k​

Answer 1

Answer:

Step-by-step explanation:      f{x} = x2 - 8x +k

                                                         = 2 x 2 - 8 x 2 + k

                                                         = 4 - 16 + k

                                                          - 12 + k = 0

                                                         k = 0 + 12

                                                          k = 12

Answer 2

Correct question :-

If the sum of zero of the polynomial f(x) = x² - 8x + k where x is 2, find the value of k​

Answer:

12

Explanation:

Given :

• Polynomial f(x) = x² - 8x + k and x is equal to 2

To Find :

• The value of k.

Solution :

f(x) = x² - 8x + k

[putting x = 2]

⇒ 2² - 8(2) + k = 0

⇒ 4 - 16 + k = 0

⇒ -12 + k = 0

∴  k = 12

Therefore,the value of k = 12