Question

12. Resolva:
a. (x + y)2
b. (3x + 5)2
c. (x - y)?
d. (x + y).(x - y)
e. (3x + 5) (3x - 5)​

Answer 1

Explicação passo-a-passo:

a. (x + y)²

x² +2xy + y²

b. (3x + 5)²

9x² + 30x + 25

c. (x - y)²

x² - 2xy + y²

d. (x + y).(x - y)

x² -xy +xy -y²

x² - y²

e. (3x + 5) (3x - 5)

9x² - 15x + 15x -25

9x² - 25