Question

6)Calcule o vértice das funções abaixo: a) 4x² - 36 = 0 b )7x² - 21 = 0 c)x² + 9 = 0 d)x² - 49 = 0 e)5x² - 20 = 0 f)x² - 4 = 0 g)x² + 9 = 0 h)x² + 3x - 10= 0 i) x² - 5x + 6 = 0 j) x² - 8x + 12 = 0 k) x² + 2x - 8 = 0 l) x² - 5x + 8 = 0 m) 2x² - 8x + 8 = 0 n) x² - 4x - 5 = 0

Answer 1

Resposta:

a) 4x2=. 36

x2= 36/4

x=√9

x= 3

b) 7x2= 21

x2= 21/7

x= √3

c) x2= -9

x= √-9

x= -3

d) x2= 49

x= √49

x= 7

e) 5x2= 20

x2= 20/5

x= √4

x= 2

f) x2= 4

x=√4

x= 2

g) x2= -9

x= √-9

x= -3