a b=8,a^2b^2 4,求(a^2 b^2) 2-ab
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a^2(a+b)-ab(a+b)+b^2(a+b)=2(a²-ab+b²)=2(a²+2ab+b²-3ab)=2[(a+b)²-3ab]=2[4+24
a+2b=0a=-2ba²=4b²∴a²+2ab-b²=4b²-4b²-b²=-b²2a²+ab+b²
(3a-4b-ab)-(a-2b+3ab)=3a-4b-ab-a+2b-3ab=2a-2b-4ab=2(a-b)-4ab=2×(-1)-4×(-2)(将a-b=-1,ab=-2代入)=-2+8=6
(a-b)*(3a+2b)=0b/a=-3/2a/b-b/a-(a*a+b*b)/ab=-2b/a=3
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a^2-a-a*a+b=8;b-a=8;b^2-2ab+a^2=64;(a*a+b*b)/2-ab=(b^2-2ab+a^2)/2=32
A=3A^2B+3AB^2+B^4,2B=-16AB^2+4A^2B+2C^4,A-2B=-A^2B+19AB^2+B^2-2C^4
a-b=3ab2a-2b-ab/a-b+2ab=6ab-ab/3ab+2ab=5ab/5ab=1
﹙a²+ab﹚﹙ab+b²﹚=a²×ab+a²b²+a²b²+ab×b²=ab﹙a²+b²﹚+2a&
(5a-5b-ab)-(4a-6b-3ab)=5a-5b-ab-4a+6b+3ab=a+b+2ab=3-2x2=-1
2a+2b-ab分之a+b+2ab=2(a+b)-ab分之a+b+2ab=6ab-ab分之3ab+2ab=5ab分之5ab=1
a/b=2则a=2b所以a²=4b²ab=2b²所以原式=(4b²+2b²-b²)/(4b²-4b²+2b²)
由a(a-1)-(a×a-b)=-5得a^2-a-a^2+b=-5,即a-b=5,(a-b)^2=25.(a×a+b×b)÷2-ab=(a-b)^2÷2=25÷2=12.5
a-b-3ab=0a-b=3ab(2a+3ab-2b)/(a-ab-b)=[2(a-b)+3ab]/(a-b-ab)=9ab/2ab=9/2
原式=2ab(a+b)²-ab(a+b)=2*(-3)*8²-(-3)*8=-360
a-ab=26变形得:a=26+ab.ab-b=-18变形得:b=18+ab所以a-b=ab+26-18-ab=8a-2ab+b=26+ab+18+ab-2ab=44满意请采纳
a/(a-b)=2得a=2a-2b则a=2b所以(a²+ab)(a-5b)/(a-b)(a²-5ab)=(4b²+2b²)(2b-5b)/(2b-b)(4b&s
ab/a+b=3ab=3(a+b)2ab/a+b-5(a+b)/ab=6(a+b)/(a+b)-5(a+b)/3(a+b)=6-5/3=13/3
ab/(a+b)=3,a+b=ab/3原式=[3(a+b)+ab]/[2(a+b)-ab]=[3(ab/3)+ab]/[2(ab/3)-ab]=2ab/(-ab/3)=-6
a+b=3ab2a+2b-ab=6ab-ab=5aba+b+2ab=5ab所以原式=1