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RaahDias
@RaahDias
December 2019
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MATEMÁTICA 8° ANO ( Cálculos Algébricos )
SIMPLIFIQUE :
a} ( x + y )² + ( x - y )² =
b} ( 2a + 3 )² - ( 2a - 3)² - 2 ( a - 3 ) =
{ Ajudem , trabalho importante de alto valor para hoje }
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LuanaBarbos4
A) ( x + y )² + ( x - y )² =
x² + 2xy + y² + x² - 2xy + y² =
>>>>>> 2x² + 2y² <<<<<<
B) (2a + 3)² - (2a - 3)² - 2(a - 3)
(4a² + 12a + 9) - (4a² - 12 + 9) -2a + 6
= 4a² + 12a + 9 - 4a² +12 - 9 -2a + 6
>>>>>> 10a + 18 <<<<<<
Não sei se está correta.. Espero ter ajudado!!
Bjs!!
1 votes
Thanks 1
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Lista de comentários
x² + 2xy + y² + x² - 2xy + y² =
>>>>>> 2x² + 2y² <<<<<<
B) (2a + 3)² - (2a - 3)² - 2(a - 3)
(4a² + 12a + 9) - (4a² - 12 + 9) -2a + 6
= 4a² + 12a + 9 - 4a² +12 - 9 -2a + 6
>>>>>> 10a + 18 <<<<<<
Não sei se está correta.. Espero ter ajudado!!
Bjs!!