(-2x的4次方)的4次方+2x的10次方×(-x的2次方)的3次方+2x的4次方乘5(x的4次方)的3次方
=16x^16+2x^10×(-x^6)+2x^4*5(x^12)
=16x^16-2x^1+10x^16
=24x^16