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Mathematics 10 Online
OpenStudy (anonymous):

solve the equation by making an appropriate substitution: x^4-5x^2+4=0

OpenStudy (anonymous):

assume x^2 = y

OpenStudy (anonymous):

so y^2-5y+4=0 and factor that?

OpenStudy (anonymous):

yea exactly

OpenStudy (anonymous):

then my answers come out to y=4 y=1 and those are incorrect

OpenStudy (anonymous):

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