August 2019 1 32 Report
1) Coloque em evidência.

a) x₂ - x =

b) - x ₊ 3 x ₊ 4 x =

c) - x ₊ 2 x - x₂

2) Faça o Agrupamento.

a) 2 a x - 4 b x ₊ 3 a y - 6 b y

b) m n - m p - n ₊ p
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