Question

1- Verdadeiro ou falso?
a) (V) (2a + 5) = 4a2 + 20a + 25
b) ( ) (3x - 2) = 9x2 - 12x + 4
c) ( ) ( 5x - 3) = 25x2 + 9 - 30X
d) ( ) x² - 16 = (x+3)(x-3)
2. (mn) = m n​

Answer 1

a) (V) (2a + 5) = 4a2 + 20a + 25

b) (V ) (3x - 2) = 9x2 - 12x + 4

c) (V ) ( 5x - 3) = 25x2 + 9 - 30X

d) ( F) x² - 16 = (x+3)(x-3)

2. (mn) = m n