Question

find the value of a if x minus 1 is a factor of 4 x cube + 3 x square - 4 x + k​

Answer 1

Answer:

x-1=0

x=1

4x^3+3x^2-4x+k

4*(1)^3+3*(1)^2-4*1+k=0

4+3-4+k=0

k=-3

Answer 2

Answer:

k= -3

Step-by-step explanation:

p(x)= 4 x cube + 3 x square - 4 x + k

Since (x-1) is a factor of p(X)

Therefore,

p(1) = 0

=> 4(1)^3 + 3(1)^2 -4(1) + k = 0

=> 4 + 3 - 4 +k = 0

=> k= -3