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Mathematics 11 Online
OpenStudy (anonymous):

can you factor x^4-6x^2+1? help

OpenStudy (anonymous):

Let x^2 = t

OpenStudy (anonymous):

(x^2 + 3)(x^2 - 2)

OpenStudy (anonymous):

@edisonguo That's wrong...

OpenStudy (anonymous):

oh sorry my bad. thats totally wrong. In fact, I dont think it can be easily factorised. What do you think estudier?

OpenStudy (anonymous):

Right, so the way to go is set x^2 = t to get t^2-6+1 which yo can factor using the quadratic formula, then sub back again.

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