(a^2+1)(-4a^2+1)+a^4-1 3a(a-b)(a+b)-6(b-a)^2a^2-9(a-b)^2= 3a(a-b)(a+b)-6(b-a)^2=
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(a^2+1)(-4a^2+1)+a^4-13a(a-b)(a+b)-6(b-a)^2a^2-9(a-b)^2=3a(a-b)(a+b)-6(b-a)^2=(a^2+1)(-4a^2+1)+a^4-1
(a^2+1)(-4a^2+1)+a^4-1 3a(a-b)(a+b)-6(b-a)^2a^2-9(a-b)^2= 3a(a-b)(a+b)-6(b-a)^2=
(a^2+1)(-4a^2+1)+a^4-1 3a(a-b)(a+b)-6(b-a)^2
a^2-9(a-b)^2=
3a(a-b)(a+b)-6(b-a)^2=
(a^2+1)(-4a^2+1)+a^4-1 3a(a-b)(a+b)-6(b-a)^2a^2-9(a-b)^2= 3a(a-b)(a+b)-6(b-a)^2=
(a^2+1)(-4a^2+1)+a^4-1
=(a^2+1)(-4a^2+1)+(a^2+1)(a^2-1)
=(a^2+1)(-4a^2+1+a^2-1)
=-3a^2(a^2+1)
3a(a-b)(a+b)-6(b-a)^2
=3a(a-b)(a+b)-6(a-b)^2
=3(a-b)(a^2+ab-2a+2b)
a^2-9(a-b)^2
=a^2-(3a-3b)^2
=(a+3a-3b)(a-3a+3b)
=(4a-3b)(3b-2a)
a(a-1)(a-2)(a-3)(a-4)因式分解
【1】a+a=a×a a= [ ]【2】a×a=a÷a a=[ ]【3】a×a=a－a a=[ ] [4]a－a=a＋a a=[ ]
计算[(a-1)/a*a-4*a+4]-[(a+2)/(a*a-2*a*a)]-4/a
a+a+1+a+2+a+3+a+4+a+5+a+6+a+7.+a+2013+a+2014=?
幂的计算题1、a×a^2×a^3×a^4×a^52、a+2a+3a+4a+a×a^2×a^3×a^4
a/a^2-4 a-1/a-2 a+2/a^2-4a+4
[(a/a-2)-(a/a+2)]÷4a/2-a,其中a=-1/2
(1-16a×a×a×a)÷（4a×a+1)÷(2a+1)²
(1-16a×a×a×a)÷(4a×a+1)÷(2a+1)
[a^2-4/(a-3)(a+2)+(a+2)/a-3]除以a+1/a-3
(a+1/a方-a+4/1-a方)/a方+2a-3/a+3
[a-a/(a+1)]÷(a²-2a)/(a²-4)×(a+1)/(a²+4a+4)
a=-1 求a-2a+3a-4a+5a-6a+...+99a-100a
(a+4)(2a+1)(a-3)
(a+2)(a-2)+4(a+1)-4a.
化简：a^4-(1-a)(1+a)(1+a^2)
(a-1)(a+1)(a^4+a^2+1)
计算4a /(a^2-1)+(1+a)/(1-a)