Запишите в виде многочленов произведения (t+s) (b+r) (a+2)(b-3) (d-4)(t+5) (a+z)(n-m) (c-d)(x-y) (4-b)(5+c) (r-6)(7-d)
Tb+tr+sb+sr 2b+ab-3a-6 dt+5d-4t-20 an+zn-am-zm cx-dx+dy-cy 20-5b-bc+4c 7r-42-dr+6d