Question

g(x) =2x cube +ax square -6x-2 divide by x-2

Answer 1

x-2=0
x=2
g(x)= 2xcube+ax squre-6x-2
g(2)=2×2cube+a×2squre-6×2-2
g(2)= 2×8+a×4-12-2
g(2)=16+4a-14
g(2)=4a+2
since g(x) divided by x-2
so 4a+2=0
or, 4a=-2
or, a=-1/2