Question

If(x-2) is a factor of x-mx + 10x - 20 then find the value of m.​

Answer 1

$= x - mx + 10x - 20$

$x - 2 = 0$

$x = 2$

$= ( {2)}^{2} - m(2) + 10(2) - 20$

$= 4 - 2m + 20 - 20$

$= 4 - 2m$

$2m - 4 = 0$

$2m = 4$

$m = \frac{4}{2}$

$m = 2$