Question

determine as raízes das equações abaixo ​

Answer 1

a) x² - 4 = 0

x² = 4

x = √4

x = ± 2

x' = -2

x" = 2

S = {-2 , 2}

b) x² - 9 = 0

x² = 9

x = √9

x = ± 3

x' = -3

x" = 3

S = {-3 , 3}

c) x² - 144 = 0

x² = 144

x = √144

x = ± 12

x' = -12

x" = 12

S = {-12 , 12}

d) x²- 169 = 0

x²= 169

x = √169

x = ± 13

x' = -13

x" = 13

S = {-13 , 13}

e) x² - 625 = 0

x²= 625

x = √625

x = ± 25

x' = -25

x" = 25

S = {-25 , 25}