December 2019 1 128 Report
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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