∫34(x+2)(x+1)dx=...\int \frac{3}{4}(x+2)(x+1)dx=...∫43(x+2)(x+1)dx=...
14x2+98x+32+C\frac{1}{4}x^2+\frac{9}{8}x+\frac{3}{2}+C41x2+89x+23+C
14x3+98x2+32x+C\frac{1}{4}x^3+\frac{9}{8}x^2+\frac{3}{2}x+C41x3+89x2+23x+C
x3+x2+x+Cx^3+x^2+x+Cx3+x2+x+C
14x3+98x2+34x+C\frac{1}{4}x^3+\frac{9}{8}x^2+\frac{3}{4}x+C41x3+89x2+43x+C
14x3+94x2+32x+C\frac{1}{4}x^3+\frac{9}{4}x^2+\frac{3}{2}x+C41x3+49x2+23x+C