计算2m/5n²p-3n/4mp²还有两题:3y/2x+2y+2xy/x²+xy2x/x²-64y²-1/x-8y就这三题,做起来有很多疑问。
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![计算2m/5n²p-3n/4mp²还有两题:3y/2x+2y+2xy/x²+xy2x/x²-64y²-1/x-8y就这三题,做起来有很多疑问。](/uploads/image/z/3766033-1-3.jpg?t=%E8%AE%A1%E7%AE%972m%2F5n%26%23178%3Bp-3n%2F4mp%26%23178%3B%E8%BF%98%E6%9C%89%E4%B8%A4%E9%A2%98%EF%BC%9A3y%2F2x%2B2y%2B2xy%2Fx%26%23178%3B%2Bxy2x%2Fx%26%23178%3B-64y%26%23178%3B-1%2Fx-8y%E5%B0%B1%E8%BF%99%E4%B8%89%E9%A2%98%EF%BC%8C%E5%81%9A%E8%B5%B7%E6%9D%A5%E6%9C%89%E5%BE%88%E5%A4%9A%E7%96%91%E9%97%AE%E3%80%82)
计算2m/5n²p-3n/4mp²还有两题:3y/2x+2y+2xy/x²+xy2x/x²-64y²-1/x-8y就这三题,做起来有很多疑问。
计算2m/5n²p-3n/4mp²
还有两题:3y/2x+2y+2xy/x²+xy
2x/x²-64y²-1/x-8y
就这三题,做起来有很多疑问。
计算2m/5n²p-3n/4mp²还有两题:3y/2x+2y+2xy/x²+xy2x/x²-64y²-1/x-8y就这三题,做起来有很多疑问。
2m/5n²p-3n/4mp²
=(8m²p-15n³)/20mn²p²
3y/2x+2y+2xy/x²+xy
=3y/2(x+y)+2xy/x(x+y)
=3y/2(x+y)+2y/(x+y)
=(3y+4y)/2(x+y)
=7y/(2x+2y)
2x/x²-64y²-1/x-8y
=2x/(x-8y)(x+8y)-1/(x-8y)
=(2x-x-8y)/(x-8y)(x+8y)
=(x-8y)/(x-8y)(x+8y)
=1/(x+8y)