Find the constant term in the expansion of (10x^3 - 1/(2x^2) + x)^5
Here's the expansion :
100000 x^15 + 50000 x^13 + 10000 x^11 - 25000 x^10 - 1/(32 x^10) + 1000 x^9 - 10000 x^8 + 50 x^7 + 5/(16 x^7) - 1500 x^6 + 2501 x^5 + 25/(8 x^5) - 100 x^4 - 5/(4 x^4) + 750 x^3 - (5 x^2)/2 - 25/x^2 + 75 x + 5/(2 x) - 125
