Question

2- Resolva as equações incompletas do segundo grau: a) 5x²-x=0 b) 2x² - 2 = 0 c) 5x²=0​

Answer 1

a) 5x²-x = 0

x(5x-1) = 0

x¹ = 0

5x-1 = 0

5x = 1

x² = 1/5

S = {0,1/5)

b) 2x² - 2 = 0

2(x²-1) = 0

x² = 1

x = +-√1

x¹ = -1

x² = +1

S = {-1,+1}

c) 5x²=0

x² = 0/5

x = 0

S {0}

❤️ boa noite ❤️

12/12/21