Question

2)If x= 5 is a root of equation kx2

-14 x -5 = 0 then find the value of k by completing the

following activity:

Solution:One of the roots of equation kx2

-14 x -5 = 0 is

Now let x = in the quation

K ( )

2 – 14 -5 =0

25k -70 -5 =0

25k- = 0

25k=

K = =​

Answer 1

kx^2 -14x -5 =0

given x=5

substitute the value of x in the given equation

we get,

25k-70-5=0

25k-75=0

25k=75

k=75/25

k=3

Answer 2

Answer:

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