Question

Find the value of k for which (x-1) is a factor of 2x^2 + 9x^2 + x + k

Answer 1

If x - 1 is the factor ,

then , X = 1 is it'z zeroes ..

P ( 1 ) = 2 + 9 + 1 + k

0 = 12 + k

k = - 12 Ans.

Answer 2

putting value of X in above
2 +9 + (1 ) +k=0
hence. k=12