a/b=2 ,(a*a-ab+b*b)/(a*a+b*b)=
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a/b=2,(a*a-ab+b*b)/(a*a+b*b)=a/b=2,(a*a-ab+b*b)/(a*a+b*b)=a/b=2,(a*a-ab+b*b)/(a*a+b*b)=a=2b则原式=(4b-2
a/b=2 ,(a*a-ab+b*b)/(a*a+b*b)=
a/b=2 ,(a*a-ab+b*b)/(a*a+b*b)=
a/b=2 ,(a*a-ab+b*b)/(a*a+b*b)=
a=2b 则原式=(4b-2b+b)/(4 b +b) =3b/5b =0.6
a/b=2 ,(a*a-ab+b*b)/(a*a+b*b)=
若a/b=2 则a*a-ab+b*b/a*a+b*b等于?
如果a/b=2则a*a-ab+b*b/a*a+b*b求值
(ab+b)(ab+b)-(a+b)(a+b)= (公式)
a(a+b)(a-b)-a(a+b)(a+b),其中(a+b)=1,ab=-1/2
a^3-ab^2 =a (a^2 -b^2) =a(a+b)(a-b)
a(a-1)-(a×a-b)=-5,求(a×a+b×b)÷2-ab
a+b/2ab
2AB/A+B
a+b/2ab
若a/b=2,求分式a*a+ab-b*b/a*a-2ab+2b*b
已知a+2b=0,求a*a+2ab-b*b/2a*a+ab+b*b
4ab/b^2(a-b)=
因式分解:a×a×a-2a×a×b+ab×b
已知3a*a+ab-2b*b=0(a不等于0,b不等于0),求a/b-b/a-(a*a+b*b)/ab的值.
b/a-b +a/a+b +2ab/a^2-b^2=
已知(a+b)(a+b)=20,ab+2,求(a-b)(a-b)的值
a+b/ab= /a²b