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Mathematics 13 Online
OpenStudy (nsh4267):

Find the solutions of the equation. 4x^4+25x^2+36=0

hartnn (hartnn):

can u solve quadratic equations ?

hartnn (hartnn):

replace x^2 by y so u get 4y^2+25y+36=0 can u solve this quadratic equation ?

OpenStudy (nsh4267):

yes

hartnn (hartnn):

so what are the values of y do u get ?

OpenStudy (nsh4267):

9/4 and 4

hartnn (hartnn):

positive or negative ?

hartnn (hartnn):

aren't the roots -9/4 and -4 ?

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