Question

Given that ( x−1) is a factor of the polynomial x^3−2x^2+5 x−m , then value of m=…__


a) 4
b) −4
c) 2
d) −2​

Answer 1

Answer:

4

Step-by-step explanation:

x = 1

${x}^{3} - 2 {x}^{2} + 5x - m = 0 \\ = 1 - 2 + 5 - m = 0 \\ = 4 - m = 0 \\ m \: = 4$

a) 4 is the correct answer