Question

EFETUE:
B) (X+1).(3x-2)

C) (A-1).(A+1)

D) (X-2).(X+3)

E) (3x+5).(2x-4)

Answer 1

Oi...

Efetue:

b)

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

3x² - 2x + 3x - 2

3x² + x - 2

c)

(a - 1).(a + 1)

a² + a - a - 1

a² + 0 - 1

a² - 1

d)

(x - 2).(x + 3)

x² + 3x - 2x - 6

x² + x - 6

e)

(3x + 5).(2x - 4)

6x² - 12x + 10x - 20

6x² - 2x - 20

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