Question

5 и 6 пример, решите пожалуйста!!!

Answer 1

5) a 8a+a^2-4a+4 a

--- - ( ------------)* --- =

a-2 (a-2)(a+2) a+2

a (a+2)^2 a

= --- - ---------- * ---- =

a-2 (a-2)(a+2) a+2

a a+2 a a a

= ---- - ---- * --- = ---- - ---- =

a-2 a-2 a+2 a-2 a-2

=0

28c+c^2-14c+49 c

6) 2+ (---------------) * ---- -

(c-7)(c+7) c+7

c c+7 c c

- ---- = 2+ ---- * ----- - ----- =

c-7 c-7 c+7 c-7

c c

= 2+ ---- - ----- = 2

c-7 c-7