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OpenStudy (anonymous):
How do you solve y^4-5y^2+4=0. Please show work
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OpenStudy (anonymous):
y^4-5y^2+4=0 (y^2-4)(y^2-1)=0 (y+2)(y-2)(y+1)(y-1)=0 y=-2, 2, -1, 1
OpenStudy (anonymous):
thank-you
OpenStudy (anonymous):
WELCOME! XD
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