题目
x .-m -1 O-|||--x m 1 =(a)_(4)(x)^4+(a)_(3)(x)^3+(a)_(2)(x)^2+(a)_(1)x+(a)_(0) ,则 _(4)+(a)_(3)+(a)_(2)+(a)_(1)+(a)_(0)= ()-|||-22.已知 -1 x -m-|||-m 1 -x-|||-(A) -(m)^4+4(m)^2 (B) ^4+4(m)^2 (C) -(m)^4+2(m)^2-|||-(D) ^4-4(m)^2 (E) -(m)^4-4(m)^2
题目解答
答案
:由题意知,令 x=1 得, ${a}_{4}+{a}_{3}+{a}_{2}+{a}_{1}+{a}_{0}=-1-m=-{m}^{2}+4{m}^{2}$ 故选 A。
22.A
22.A