UEC 07 3(c)

Posted by ¿ÑôÖøߧ© at 8:52 AM |
x2 = x^2
here short form

x2-xy-xz-2xy+2yz+2y2+xz-yz-z2
= x(x-y-z)-2y(x-y-z)+z(x-y-z)
=(x-y-z)(x-2y+z)
Saturday, August 8, 2009

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