Question

plz tell me answer ​

Answer 1

hey mate your answer is

Step-by-step explanation:

mark the brilliant answer .

Answer 2

Answer:

If polynomial is divisible by x-1 , it will satisfies x=1 .

$4 .{1}^{3} - 16. {1}^{2} + a.1 + 7 = 0 \\ a = 16 - 7 - 4 = 5$

Now factor Either divide or

$4 {x}^{3} - 16 {x}^{2} + 5x + 7 \\ = 4 {x}^{2} (x - 1) - 12x(x - 1) - 7(x - 1) \\ = (x - 1)( 4{x}^{2} - 12x - 7) \\ = (x - 1)(4 {x}^{2} - 14x + 2x - 7) \\ = (x - 1)(2x +7)(2x + 1)$