Question

1. resolva as equações: (resolver com as contas)
a)x²- 5x + 6 = 0
b) x²- 8x + 12 = 0
c) -x² + x + 12 = 0
d) 6x² +x - 1 = 0
e) 3x² - 7x +2 = 0

Answer 1

Resposta:

a) x² - 5x = 0 + 6

2x - 5x = 0 + 6

3x = 6

x = 2

b) x² - 8x + 12 = 0

2x - 8x = 0 + 12

6x = 12

x = 2

c) -x² + x + 12 = 0

-x² + x = 0 + 12

x = 12