(a+b/2)² +b/2 -5a. (b/2+5a) alguém sabe???
Soluções para a tarefa
Respondido por
3
(a + b/2)² + b/2 - 5a.(b/2 + 5a)
= a² + 2.a. b + b² + b - 5ab - 25a²
---- ----- ---- -------
2 4 2 2
= a² + ab + b² + b - 5ab - 25a²
----- ----- -------
4 2 2
= a² - 25a² + ab - 5ab + b² + b
------- ----- -----
2 4 2
= - 24a² + 2ab - 5ab + b + b²
--------------- ----- -----
2 2 4
= - 24a² - 3ab + b + b²
-------- ---- ------
2 2 4
= a² + 2.a. b + b² + b - 5ab - 25a²
---- ----- ---- -------
2 4 2 2
= a² + ab + b² + b - 5ab - 25a²
----- ----- -------
4 2 2
= a² - 25a² + ab - 5ab + b² + b
------- ----- -----
2 4 2
= - 24a² + 2ab - 5ab + b + b²
--------------- ----- -----
2 2 4
= - 24a² - 3ab + b + b²
-------- ---- ------
2 2 4
Respondido por
2
(a+b/2)² +b/2 -5a. (b/2+5a) =
= a² + ab + b²/4 + b/2 - 5ab/2 - 25a²
= 24a² -3ab/2 +b/2 + b²/4
= 24a² + b²/4 - b/2(3a -1)
*-*-*-*-*-*-*-*-*-*-*-*
10/10/2016
Sepauto
*-*-*-*-*-*-*-*-*-*-*-*
= a² + ab + b²/4 + b/2 - 5ab/2 - 25a²
= 24a² -3ab/2 +b/2 + b²/4
= 24a² + b²/4 - b/2(3a -1)
*-*-*-*-*-*-*-*-*-*-*-*
10/10/2016
Sepauto
*-*-*-*-*-*-*-*-*-*-*-*
Perguntas interessantes