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,](/uploads/image/z/1798703-71-3.jpg?t=%E5%8C%96%E7%AE%80%EF%BC%9A1.%EF%BC%882x%2B2y%2F5a%26%23178%3Bb%29%C3%97%2810ab%26%23178%3B%2Fx%26%23178%3B%EF%BC%8Dy%26%23178%3B%29+2.2013%26%23178%3B-4026%C3%972002%2B2002%26%23178%3B%E8%B5%B6%E6%80%A5%E7%9A%84%E6%92%92%7E%E5%B8%AE%E5%B8%AE%E7%9A%84%E5%92%AF%EF%BC%8C)
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