(3a+b)(3a-b)^3 - (a+5b)(b-3a)^3
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(3a+b)(3a-b)^3 - (a+5b)(b-3a)^3
![(3a+b)(3a-b)^3 - (a+5b)(b-3a)^3](/uploads/image/z/15271139-11-9.jpg?t=%283a%2Bb%29%283a-b%29%5E3+-+%28a%2B5b%29%28b-3a%29%5E3)
(3a+b)(3a-b)^3 - (a+5b)(b-3a)^3
=(3a+b)(3a-b)^3 + (a+5b)(3a-b)^3
=(3a-b)^3(3a+b+a+5b)
=(3a-b)^3(4a+6b)
=(3a+b)(3a-b)^3 + (a+5b)(3a-b)^3
=(3a-b)^3(3a+b+a+5b)
=(3a-b)^3(4a+6b)
3a(a-b)-5b(a-b)
[a+b][a-b]+3a
(3a-6b)/(a+b) - (5a-6b)/(a-b) - (4a-5b)/(a+b) - (7a-8b)/(a-b
(3a-6b/a+b)-(5a-6b/a-b)-(4a-5b/a+b)-(7a-8b/b-a)
计算:3a+4b/a-b+3b/b-a-4a/a-b
3a/a-4b +a+b/4b-a -7b/a-4b
因式分解(a-b)-3a+3b (a+b)(a-b)-2b(3a-5b)
A=B+B+B+B+B+B+B+B+B+B+B+B+B+B+B A-B×3=C C+2×7+2=1
[(a+2b)(a-2b)-(2a-b)²+(3a-b)(3a-5b)]÷2a
1.(a-b)^2(b-a)^3(a-b)^-4
3a+2b用a+b,a-b表示
因式分解(a-b)^2*(a+b)-(a-b)^3