Help me solve this equation, (2x ^ 4-3x ^ 3 + 5x ^ 2 + x) (- x + 1) 2011^2-2010*2012

(2x^4-3x^3+5x^2+x)(-x+1)
=-2x^5+3x^4-5x^3-x^2+2x^4-3x^3+5x^2+x
=-2x^5+5x^4-8x^3+4x^2+x
2011^2-2010*2012
=2011^2-(2011-1)(2001+1)
=2001^2-2011^2+1
=1

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