Question

if x-a is factor of 2x- mx + na then prove that a = m - n by 2

Answer 1

g(x) =x - a = 0

x = a

f(x) = 2x - mx + na

= 2a - ma + na

2a -ma + na =0

na - ma = -2a

-a ( -n + m ) = - 2a

m - n = 2

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