Question

If 5 is a root of equation kx2 - 14x-5=0 then find the value of k by completing the following
activity.Complete the following activity to find the value of k.
_is a root of quadratic equation kx2 - 14x-5 = 0
Put x = _in the equation.
k* 2- 14*_ - 5 = 0
25k – 70-5 =0
25k-_=0
25k = _
k=_/_​

Answer 1

Step-by-step explanation:

5 is a root of equation kx² - 14x-5=0

p(x)=kx²-14x-5

p(5)=k(5)²-14(5)-5

0=25k-70-5

0=25k-75

25k=75

k=75/25

k=3