Question

Me Ajudem! 4 x2 - 1 = 0 ?

Answer 1

4x² - 1 = 0 

4x² = 1 

x² = 1/4 

x = √1/4 

x' = 1/2 

x'' = - 1/2                           S = { -1/2 , 1/2 }                            ok 

Answer 2

4x² - 1 = 0
4x² = 1
x² = 1/4
x = √1/4

x' = 1/2
x" = -1/2