Question

Utilizando as regras dos produtos notáveis, calcule :
a) ( x + 3)2 d)x2 - 6)2

b) ( a + b )2 e) (2x + 7)2

C) 5y - 1)2 f) (9x+1) . (9x-1)

g) (2x+3y) (2x-3y)

Answer 1

A)

(x+3)2
2x + 6

B)

(a+b)2
2a + 2b

C)

(5y - 1)2
10y - 2

D)

(x²-6)2
2x² - 6

E)

(2x+7)2
4x+14

F)

(9x+1) * (9x-1)
81x - 9x + 9x -1
81x - 1

G)

(2x+3y) * (2x-3y)
4x - 6xy + 6xy - 9y
4x - 9y