Question

Proszę o pomoc w rozwiązaniu tego równania:

x^2(9x^2-1)=0

Answer 1

x^2 ( 9 x^2 - 1) = 0 <=> x^2 = 0  v  9 x^2 - 1 = 0 <=>

< =>   x = 0  v (3x -1)(3x+1) = 0  <=>   x = 0   v  3x - 1 = 0 v 3x + 1 = 0 <=>

<=>  x = 0  v   3x = 1   v  3x = - 1  <=>  x = 0  v  x = 1/3   v  x = - 1/3

Odp. x1 = -1/3 , x2 = 0 , x3 = 1/3

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Answer 2

 

 

 

 

 

Odp.