Question

Выполните действия:
1) (2+ a/a+1)×3a^2+3a/12a+8
2)(a/a-5 -2a)÷11-2a/a-5

Answer 1

(1-5-2a)/11-2*1-5
(-4-2a)/11-2-5
-4-2a/11-2-5
-4-2a/11-7
-4-2a-77/11
-81-2a/11

(2+1+1)*3a2+1/4+8
4*3a2+1/4+8
12a2+1/4+8
12a2+1+32/4
12a2+33/4