<PRE><B>Question 367353</B>
Multiply:
(x^2+x+4)
(x-4)
---------------------
X^3+X^2+4X-4X^2-4X-16
X^3-3X^2-16 ans.

Add:
(8x^2-xy+y^2)
(-x^2-4xy+6y^2)
--------------------
7x^2-5xy+7y^2 ans.

Factor By Grouping:
4x^3-28x^2-3x+21
4x^2(x-7)-3(x-7)
(4x^2-3)(x-7) ans.

Factor:
3c^7-192c^4
3c^4(c^3-64)
3c^4(c-4)(c^2+4c+16) ans.


</PRE>