Question

resolver a questao (x + 6) ao quadrado produtos notaveis
(x - 9) "
(x - 5).(x-5)
(2a - 5) "
(7y + 1) "
(9x - 2) "

Answer 1

a) 
(x + 6)²
(x + 6) (x + 6)
x² + 6x + 6x + 36
x² + 12x + 36

b)
(x - 9)²
(x - 9) (x - 9)
x² - 9x - 9x + 81
x² - 18x + 81

c)
(x - 5) (x - 5)
x² - 5x - 5x + 25
x² - 10x + 25

d)
(2a - 5)²
(2a - 5) (2a - 5)
4a² - 10a - 10a + 25
4a² - 20a + 25

e)
(7y + 1)²
(7y + 1) ( 7y + 1)
49y² + 7y + 7y + 1
49y² + 14y + 1

f)
(9x - 2)²
(9x - 2) (9x - 2)
81x² - 18x - 18x + 4
81x² - 36x + 4