Alternativa " A " 25.
( x + 5 )² – x ( x + 10 ) =
x² + 10x + 25 – x . ( x + 10 ) =
x² + 10x + 25 – x² – 10x =
10x + 25 – 10 =
25
☆
|| ASS: Blues / 02|09|21 / às 10:45
