Question

resolva os seguintes produtos notáveis:
A) (7×-y²)
B) (b-3ײ)²
C)(2ac -1/3y)²
D) (5a³ -0,6)²
E) (2p5 -3r³)²
F) (1,1-5x²y) . (1,1+5x²y)

Answer 1

A) (7×-y²)²
= (7x)² - 2.7x.y² + (y²)²
= 49x² - 14xy² + y^4

B)
= (b-3ײ)²
= b² - 2.b.3x² + (3x²)²
= b² - 6bx² + 9x^4

C)
= (2ac - 1/3y)²
= (2ac)² - 2.2ac.1/3 y + (1/3 y)²
= 4a²c² - 4acy/3 + y²/9

D)
= (5a³ - 0,6)²
= (5a^3)^2 - 2.5a^3.0,6 + (0,6)^2
= 25a^6 - 6a^3 + 0,36

E)
= (2p^5 - 3r³)²
= (2p^5)^2 - 2.2 p^5 . 3 r^3 + (3r^3)^2
= 4 p^10 - 12 p^5 r^3 + 9 r^6

F)
= (1,1-5x²y) . (1,1+5x²y)
= (1,1)² - (5x²y)²
= 1,21 - 25 x^4 y^2