Question

If (x-3) is a factor of the polynomial (2x^2+x+k)....then find the value of k
If u want to answer please give step by step explanation or by image
THANKS ​

Answer 1

Answer:

x-3=0

x=3

substitute x=3 in the equation given

2(3)^2+3+k=0

2(9)+3+k=0

k= -21

answer is minus 21

Answer 2

Answer:

x-3)2x²+x+k(2x+7

2x²-6x

7x+k

7x-21

0.

=> k-(-21)=0

=> k=-21