Question

when x^3 -ax^2-6x-a is divided by x-a

Answer 1

x-a=0

x=A


f (x)=x^3-ax^2-6x-a


=a^3-a×(a)^2-6×a-a

=a^3-a^3 -6a-a

=7a





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Answer 2

$x ^{3} - ax {}^{2} - 6x - a \: by \: x - a$