if x-3 is a factor of 2x^m -3x^m-1 +4x -39 find the value of m
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its an example
zero of the divisor
= 2x-1 = 0
= 2x = 1
x=1/2
p(x) = 8x^4 - 4x^3 - 16x^2 + 10x + m
p(1/2) = 8*(1/2)^4 - 4*(1/2)^3 - 16*(1/2)^2 + 10*1/2 + m = 0
= 8*1/16 - 4*1/8 - 16*1/4 + 5 + m = 0
= 1/2 - 1/2 - 4 + 5 +m =0
= 1+m = 0
= m = -1
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