<PRE><B>Question 698177</B>
factored form of 6x^4-21^3-12x^2
-----
Common Factor: 3x^2
----
= 3x^2(2x^2 - 7x - 4)
----
= 3x^2(2x^2 - 8x + x - 4)
-----
= 3x^2(2x(x-4)+(x-4))
-----
= 3x^2(x-4)(2x+1)
====================
Cheers,
Stan H.
====================</PRE>