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OpenStudy (nsh4267):
Find the solutions of the equation. 4x^4+25x^2+36=0
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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
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hartnn (hartnn):
positive or negative ?
hartnn (hartnn):
aren't the roots -9/4 and -4 ?
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