There is no equation nor inequality in the question so there is nothing which can be solved.
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It can be simplified to 2x^2 +x -6 and factored to (2x-3)(x+2)
-4x-1-3x-4+5 = -7x-1-2x+1+6 -7x = -9x+6 2x = 6 x = 3
X=27
If you mean integral[(2x^2 +4x -3)(x+2)], then multiply them out to get: Integral[2x^3+8x^2+5x-6]. This is then easy to solve and is = 2/4x^4+8/3x^3+5/2x^2-6x +c
The expression simplifies to: -7x-4