Question 1012998
====x^2-2x+4
x+2/x^3+0x^2+0x+8
====x^3+2x^2
change sign and add
======-2x^2+8
======-2x^2-4x
change sign and add
=======4x+8
=======4x+8
change sign and add
0
x^2-2x+4 is the quotient 
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x=-3
-3(-27)+8(-3)^2-5(-3)-9
81+72+15-9=159
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-3(x-3)^3+8(x-3)^2-5(x-3)-9;(x-3)^3=(x^2-6x+9)(x-3)=x^3-9x^2+27x-27
(x-3)^2=x^2-6x+9
the first has to be multiplied by -3
-3x^3+27x^2-81x+81 add the second multiplied by 8 
====8x^2-48x+72 add the third multiplied by -5
====== -5x+15
============-9
-3x^3+35x^2-134x+159.