Question

If the sum of the zeroes of the polynomial 5x2- 4kx + 2 is 8 then value of k is :
{a) 15 (b) -10
(c) 10 (d) -15 ​

Answer 1

Answer:

Correct Answer is Option b (-10)

Step-by-step explanation:

5x² - 4kx + 2

On comparing polynomial with ax² + bx + c

a = 5

b= -4

c = 2

Sum of zeroes= -b/ a

8 = - ( -4k )/ 5

8 × 5 = -4k

40 = -4k

k = -10

So, k = -10

Hope u will understand it easily

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