Question

It is known that (x-1) is one of the factors of the many-term equation: x ^ 3 - 2x ^ 2 - 5x + b = 0. One of factor is ...
A. X-3. D. X+3
B. X-2. E. X+6
C. X+1
The question can be seen in the pictire below.
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Answer 1

Answer:

a) x-3

Step-by-step explanation:

go through the photo attached and please mark BRAINIEST

Answer 2

Answer:

First satisfie solution x = 1 to get value of b .

$1 - 2 - 5 + b = 0 \\ b = 6$

So your equation is

$f(x) = {x}^{3} - 2 {x}^{2} - 5x + 6$

If x - a = 0 or x = a is a solution of f(x) = 0 then

$\huge\red{f(a) = 0}$

Now satisfie points and check