Question

3. (i) Find the value of k for which x = 1 is a root of the equation x2 + kx + 3 = 0. Also, find the other root.​

Answer 1

Answer:

-4=k

Step-by-step explanation:

if x=1 is root than

0 = x^2+Kx+3

0= 1+k+3

-4=k

Answer 2

Answer:

If x=1 is a root

then,

f(x)=x²+kx+3

f(1)=1²+k*1+3

f(1)=k+4

But, since x=1 is a root of the polynomial x²+kx+3 so, remainder must be 0

So

k+4=0

k=-4