Question

1) Resolva as seguintes equações:
a) 3 (x+5)
b) 4 (y+x)
c) 10 (x –y)
d) 6 (8 – x)
e) (2x + y) 2
f) (4 + 4y) 2
g) (12x – 2y) 2
h) (3x – 5y) 2
i) (6x – 3y) . (6x – 3y)
j) (3m + 4n) . (3m + 4n) porfavor

Answer 1

É preciso aplicar a distributiva.

a) 3 (x+5) → 3x + 15

b) 4 (y+x) → 4y + 4x

c) 10 (x –y) → 10x - 10y

d) 6 (8 – x) → 48 - 6x

e) (2x + y) 2 → 4x + 2y

f) (4 + 4y) 2 → 8 + 8y

g) (12x – 2y) 2 → 24x - 4y

h) (3x – 5y) 2 → 6x - 10y

i) (6x – 3y) . (6x – 3y) → 36x² - 18xy - 18xy + 9y² = 36x² + 9y²

j) (3m + 4n) . (3m + 4n) → 9m² + 12mn + 12mn + 16n² = 9m² + 24mn + 16n²

Answer 2

Resposta:

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