计算(x^2+y)(x^2-y)(x^4+y^2)(x^8+y^4)的结果是( )A.x^16-y^8 B.-x^16+y^8 C.x^32-y^16 D.x^32+y^16下列格式从左到右的变形不能再因式分解的是( )A.a^4-1=(a^2+1)(a^2-1)B.2ax^2+2ax+4a=2a(x^2+x+2) C.6a^2b^2-18ab=3ab(2ab-6) D.a^4-2a^
计算(x^2+y)(x^2-y)(x^4+y^2)(x^8+y^4)的结果是( )A.x^16-y^8 B.-x^16+y^8 C.x^32-y^16 D.x^32+y^16下列格式从左到右的变形不能再因式分解的是( )A.a^4-1=(a^2+1)(a^2-1)B.2ax^2+2ax+4a=2a(x^2+x+2) C.6a^2b^2-18ab=3ab(2ab-6) D.a^4-2a^
计算(x^2+y)(x^2-y)(x^4+y^2)(x^8+y^4)的结果是( )A.x^16-y^8 B.-x^16+y^8 C.x^32-y^16 D.x^32+y^16
下列格式从左到右的变形不能再因式分解的是( )A.a^4-1=(a^2+1)(a^2-1)
B.2ax^2+2ax+4a=2a(x^2+x+2) C.6a^2b^2-18ab=3ab(2ab-6)
D.a^4-2a^2+1=(a^2-1)^2
将x^m-x^(m-2)分解因式,可得( ) A.x^(m-2)(x^2-1) B.x^m(1-x^2)
C.x^(m-2)(x+1)(x-1) D.x^(m-2)(x+1)
计算(x^2+y)(x^2-y)(x^4+y^2)(x^8+y^4)的结果是( )A.x^16-y^8 B.-x^16+y^8 C.x^32-y^16 D.x^32+y^16下列格式从左到右的变形不能再因式分解的是( )A.a^4-1=(a^2+1)(a^2-1)B.2ax^2+2ax+4a=2a(x^2+x+2) C.6a^2b^2-18ab=3ab(2ab-6) D.a^4-2a^
1、B [注:A和D中(a^2-1)可进一步因式分解成(a+1)(a-1),C中(2ab-6)可提取2进一步分解为2(ab-3)];2、C(注:x^m-x^(m-2)=x^(m-2)(x^2-1)=x^(m-2)(x+1)(x-1)).
叫声爷爷