Posted by Zachary Gellman on Sunday, January 13, 2013 at 7:00pm.
z^4-14z^3+49z^2
= z^2(z^2 - 14z+ 49)
= x^2(z-7)^2
3z^2-147
= 3(z^2 - 49)
= 3(z+7)(z-7)
5z + 35
= 5(z+7)
LCM = 15z^2(z+7)(z-7)^2
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