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Physics 19 Online
OpenStudy (ksaimouli):

solve

OpenStudy (ksaimouli):

5-x^4-4x^2=0

OpenStudy (ksaimouli):

@hartnn can u help me with this well when i graphed it i got -1 and 1

OpenStudy (ksaimouli):

is their any other teq

OpenStudy (ksaimouli):

\[5-x^4-4x^2\]

hartnn (hartnn):

put x^2=y 5-y^2-4y=0 solve this quadratic.

hartnn (hartnn):

and yes, only 2 real roots, -1 and 1 other 2 are imaginary roots.

OpenStudy (ksaimouli):

i am getting 1 and -5

OpenStudy (ksaimouli):

when i solved in ur method

hartnn (hartnn):

yup, so x^2=1 ---->x= +1 or -1 x^2 = -5 ---->x=+i sqrt 5, -i sqrt 5 got it ?

OpenStudy (ksaimouli):

yup thx

hartnn (hartnn):

welcome ^_^

OpenStudy (ksaimouli):

whish ur family happy new year

OpenStudy (ksaimouli):

behalf of me

hartnn (hartnn):

happy new year to you and your family also :)

OpenStudy (ksaimouli):

:-)

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