Question

produtos notaveis:
a) (3 + x)² =
b) (x + 5)² =
c) ( x + y)² =
d) ( x – 7)² =
e) (2x – 5) ² =
f) (6y – 4)² =
g) (3x + y ) (3x – y) =
h) ( 1 – 5x) . (1 + 5x) =
i) (2x + 3y) . (2x – 3y) =

Answer 1

9 + 2*3*x + x² = 9 + 6x + x²
x² + 2*5*x + 25 = x² + 10x + 25
x² + 2*x*y + y² = x² + 2xy + y²
x² - 2*x*7 + 49 = x² - 14x + 49
(2x)² - 2*2x*5 + 25 = 4x² - 20x + 25
(6y)² -2*6y*4 + 16 = 36y² - 48y + 16
(3x)² - ( y)² = 9x² - y²
( 1)² - ( 5x)² = 1 - 25x²
(2x)² - (3y)² = 4x² - 9y²