Question

if x -1 is a factor of the polynomial p (x) is = 3 x power 4 - 4 x cube - 8 x + 2 then find the value of "a"

Answer 1

f(x) = 3x^4 - 4x^3 - ax + 2
f(1) = 3(1)^4 - 4(1)^3 - a(1) +2
       = 3-4-a+2
      =5-4-a
     =>1-a = 0
     => -a =-1
     => a = 1



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