Question

Rozwiąż równanie:

Answer 1

 

Answer 2

 

x^4 - 5x^2 + x^2 = 5

x^4 -4x^2 = 5

 

t^2 - 2t - 5 = 0

 

delta = b^2 - 4ac

delta = 4^2 + 20

delta = 16 + 20

delta = 36

 

x1 = -b  - pierw.z delty / 2a

x1 =  4 - 6 / 2

x1 =  -1

 

x2 = -b + pierw. z delty / 2a

x2 =  4 + 6 / 2

x2 =  5

 

t = x^2 = 5

x^2 - 5 = 0

( x + pierw. z 5) ( x - pierw. z 5 ) = 0

 

x = pierw. z 5 lub x = - pierw. z 5

 

p[ozdrawiam .