∫(x^3 + 4x^2 - 5)dx = (1/4)x^4 + (4/3)x^3 - 5x + C
∫(3x^2 - x)^2 dx = ∫(9x^4 - 6x^3 + x^2) dx = (9/5)x^5 - (3/2)x^4 + (1/3)x^3 + C
∫(x^2 + x)^2 dx = ∫(x^4 + 2x^3 + x^2) dx = (1/5)x^5 + (1/2)x^4 + (1/3)x^3 + C
∫(4x^3 + x^2)/x dx = ∫(4x^2 + x) dx = (4/3)x^3 + (1/2)x^2 + C
∫(x^3 + 4x^2 - 5)dx = (1/4)x^4 + (4/3)x^3 - 5x + C
∫(3x^2 - x)^2 dx = ∫(9x^4 - 6x^3 + x^2) dx = (9/5)x^5 - (3/2)x^4 + (1/3)x^3 + C
∫(x^2 + x)^2 dx = ∫(x^4 + 2x^3 + x^2) dx = (1/5)x^5 + (1/2)x^4 + (1/3)x^3 + C
∫(4x^3 + x^2)/x dx = ∫(4x^2 + x) dx = (4/3)x^3 + (1/2)x^2 + C