Question

1) resolva
a) (a-1).(a-1)
b) (x²+1).(x+3)
c) (3x+1).(2x+2)
d) (x+5).(x-5)
e) (x²+6).(x²-6)

Answer 1

Olá...

1) Resolva:

a)

(a - 1).(a - 1)

a² - a - a + 1

a² - 2a + 1

b)

(x² + 1).(x + 3)

x³ + 3x² + x + 3

c)

(3x + 1).(2x + 2)

6x² + 6x + 2x + 2

6x² + 8x + 2

d)

(x + 5).(x - 5)

x² - 5x + 5x - 25

x² + 0 - 25

x² - 25

e)

(x² + 6).(x² - 6)

x⁴ - 6x² + 6x² - 36

x⁴ + 0 - 36

x⁴ - 36

Boas lições.