Question

Help ... If (x - 1) is a factor of x3 + x2 + kx - 2, find the value of k.

Answer 1

If (x-1) is a factor of the expression, that means that x=1 using the zero product property. A zero to this function is (1,0). Substitute this value into the equation to find the value of x.

y=3x+2x+1k-2 where (1,0) is a zero.

0=3+2+k-2

0=3+k

k=-3

Answer 2

x3+x2+kx-2 And (x-1) is a factor

so,

Substitute +1 in places of only x

(1)*3+(1)*2+k*(1)-2

3+2+k-2

5+k-2

3+k Now, as (x-1) is a factor Equate 3+k to Zero

3+k=0

k=-3

Hope it helped you!!!!!!