Question

Упростите выражения !Срочно!!!!!!!!!!!!!!

Answer 1

1
$(1-5d^2)/d^6-(d-5)/d^4+1/d^3=(1-5d^2-d^3+5d^2+d^3)/d^6=$$1/d^6$
2
$5c/6(c-1)-4c/3(c+1)+c^2/2(c-1)(c+1)=$$(5c^2+5c-8c^2+8c+3c^2)/6(c^2-1)=11c/6(c^2-1)$

Answer 2

Решение...............................