Answers

2014-06-02T16:25:46+05:30
The remainder is (x^2+2)+a

VF:

(x-a)(x^2+2)+a=
x^3+2x-ax^2-2a+a=
x^3-ax^2+2x-a

so x-a=0 => x=a
a^3-a*a^2+2a-a=
a^3-a^3+2a-a=
=a
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2014-06-02T16:49:03+05:30
For remainder put x - a = 0
                   or  x = a
a³ - a³ + 2a - a
= a
0