-3(x^4)-x^4x^4

问题描述:

-3(x^4)-x^4x^4

X ^ 4 +4 X ^ 3 +2 X ^ 2 +4 X-4
= X ^ 4 +4 X ^ 3 +4×^ 2-2X ^ 2 +4 X-4
= X ^ 2(X ^ 2 +4 x +4开始)-2(X ^ 2-2X +1 +1)
= X ^ 2(X ^ 2 +4 x +4开始)-2(χ^ 2 4 x +4-6 X-2)
=χ^ 2(X 2)2 -2 [(X 2)2-6X-2]
= 3×2 -2 [ - 6X +1]
= 3X 2 + 12X-2
= 3(×2 +4 x +4开始)-14
= -5