Question

Resolva as funções abaixo:
F(x)=-x-5
F(x)=x+5
F(x)=x-5

Answer 1

F(x) = – x – 5 =

0 = – x – 5 =

0 + x = – x – 5 + x =

0 + x = – 5 =

x = – 5

F(x) = – x – 5 ➡️ x = – 5

F(x) = x + 5 =

0 = x + 5 =

0 – x = x + 5 – x =

0 – x = 5 =

– x = 5 =

– 1 . ( – x ) = – 1 . 5 =

x = – 1 . 5 =

x = – 5

F(x) = x + 5 ➡️ x = – 5

F(x) = x – 5 =

0 = x – 5 =

0 – x = x – 5 – x =

0 – x = – 5 =

– x = – 5 =

– 1 . ( – x ) = – 1 . 5 =

x = 5

F(x) = x – 5 ➡️ x = 5

Blues. 04|12|21 at 18:02