Question

please answer my question​

Answer 1

Answer:

-3

Step-by-step explanation:

x - 1 is a factor of 4x^3 + 3x^2 -4x +k

then x=1 is one root of 4x^3 + 3x^2 -4x +k

put x= 1

4x^3 +3x^2 -4x +k = 0

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

=> 4 + 3 - 4 + k = 0

=> k = -3

Answer 2

Given x-1 is the factor of 4x^3+3x^2-4x+k
x-1 is the root of the equation
x=1, then substitute in the equation

i.e 4(1)^3+3(1)^2-4(1)+k=0
4(1)+3(1)-4+k=0
4+3-4+k=0
3+k=0
k=-3
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