Simplify: (x2+5x)+(2x2−3x)(x^2 + 5x) + (2x^2 - 3x)(x2+5x)+(2x2−3x).
3x2+2x3x^2 + 2x3x2+2x
3x2+8x3x^2 + 8x3x2+8x
x2+2xx^2 + 2xx2+2x
3x2−2x3x^2 - 2x3x2−2x