Problema Solution
what must be subtracted from x^3-6x^2 -15x +8 so that result is exactly divisible by x^2 + x -12?
Answer provided by our tutors
x^2+x-12 ) x^3-6x^2-15x+8 (x-7
x^3+x^2-12x
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-7x^2-3x+8
-7x^2-7x+84
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4x -80
So, the expression x^3-6x^2-15x+8 must be subsracted with 4x-80 to get it perfectly divisable by x^2+x-12.