化简:1.(2x+2y/5a²b)×(10ab²/x²-y²) 2.2013²-4026×2002+2002²赶急的撒~帮帮的咯,
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化简:1.(2x+2y/5a²b)×(10ab²/x²-y²) 2.2013²-4026×2002+2002²赶急的撒~帮帮的咯,
化简:1.(2x+2y/5a²b)×(10ab²/x²-y²) 2.2013²-4026×2002+2002²
赶急的撒~帮帮的咯,
化简:1.(2x+2y/5a²b)×(10ab²/x²-y²) 2.2013²-4026×2002+2002²赶急的撒~帮帮的咯,
1.(2x+2y/5a²b)×(10ab²/x²-y²)
=2(x+y/5a²b)×(10ab²/(x+y)(x-y))
=4b/a(x-y)
2.2013²-4026×2002+2002²
=2013²-2x2013×2002+2002²
=(2013-2002)²
=121
如果本题有什么不明白可以追问,
(x+y)^2*(-x-y)^3*(-3/4(x-y)^3)*6/5(y-x))^3