Question

1. RESOLVA A FATORAÇÃO

2. A TABELA FAÇA A CORRESPONDÊNCIA

Answer 1

Ola nina

a)

3x² - 8x = 0 

x*(x - 8) = 0

x1 = 0
x2 = 8

b)

x² - 49 = 0
(x - 7)*(x + 7) = 0

x - 7 = 0
x = 7

x + 7 = 0
x = -7

c)

x^3 + x² + 3x + 3 = 0

x²*(x + 1) + 3*(x + 1) = 0

(x + 1)*(x² + 3) = 0

x + 1 = 0

x = -1 

d) 

x² - 6x + 9 = 0

(x - 3)*(x - 3) = 0

x1 = 3
x2 = 3

2)

a)

x² - 3x = 0
x*(x - 3) = 0

x1 = 0
x2 = 3  (IV)

b)

x² - 25 = 0

(x + 5)*(x - 5) = 0

x1 = -5
x2 = 5   (I)

c)

4x² + 12x + 9 = 0

(2x + 3)*(2x + 3) = 0

x1 = -3/2
x2 = -3/2  (II)

d)

x^3 - 3x² - 9x + 27 

x²*(x - 3) - 9*(x - 3) = (x² - 9)*(x - 3)

x² = 9

x1 = 3
x2 = -3
x3 = 3 (III)