①(-2r²s)²÷4rs²②(5x²y^3)²÷25x^4y^5③(x+y)^3÷(x+y)④7a^5b^3c^5÷14a²b^3c⑤8a^4b^3c÷2a²b^3×(-2/3a^3bc²)⑥(3x²y)²×(-15xy^3)÷(-9x^4y²)⑦(5m³n
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![①(-2r²s)²÷4rs²②(5x²y^3)²÷25x^4y^5③(x+y)^3÷(x+y)④7a^5b^3c^5÷14a²b^3c⑤8a^4b^3c÷2a²b^3×(-2/3a^3bc²)⑥(3x²y)²×(-15xy^3)÷(-9x^4y²)⑦(5m³n](/uploads/image/z/1273272-24-2.jpg?t=%E2%91%A0%EF%BC%88-2r%26%23178%3Bs%EF%BC%89%26%23178%3B%C3%B74rs%26%23178%3B%E2%91%A1%EF%BC%885x%26%23178%3By%5E3%EF%BC%89%26%23178%3B%C3%B725x%5E4y%5E5%E2%91%A2%EF%BC%88x%2By%EF%BC%89%5E3%C3%B7%EF%BC%88x%2By%EF%BC%89%E2%91%A37a%5E5b%5E3c%5E5%C3%B714a%26%23178%3Bb%5E3c%E2%91%A48a%5E4b%5E3c%C3%B72a%26%23178%3Bb%5E3%C3%97%EF%BC%88-2%2F3a%5E3bc%26%23178%3B%EF%BC%89%E2%91%A5%EF%BC%883x%26%23178%3By%EF%BC%89%26%23178%3B%C3%97%EF%BC%88-15xy%5E3%EF%BC%89%C3%B7%EF%BC%88-9x%5E4y%26%23178%3B%EF%BC%89%E2%91%A6%EF%BC%885m%26%23179%3Bn%26%2317)
①(-2r²s)²÷4rs²②(5x²y^3)²÷25x^4y^5③(x+y)^3÷(x+y)④7a^5b^3c^5÷14a²b^3c⑤8a^4b^3c÷2a²b^3×(-2/3a^3bc²)⑥(3x²y)²×(-15xy^3)÷(-9x^4y²)⑦(5m³n
①(-2r²s)²÷4rs²
②(5x²y^3)²÷25x^4y^5
③(x+y)^3÷(x+y)
④7a^5b^3c^5÷14a²b^3c
⑤8a^4b^3c÷2a²b^3×(-2/3a^3bc²)
⑥(3x²y)²×(-15xy^3)÷(-9x^4y²)
⑦(5m³n²-6m²)÷3m
①(-2r²s)²÷4rs²②(5x²y^3)²÷25x^4y^5③(x+y)^3÷(x+y)④7a^5b^3c^5÷14a²b^3c⑤8a^4b^3c÷2a²b^3×(-2/3a^3bc²)⑥(3x²y)²×(-15xy^3)÷(-9x^4y²)⑦(5m³n
①(-2r²s)²÷4rs²=r^3
②(5x²y^3)²÷25x^4y^5=y
③(x+y)^3÷(x+y)=(x+y)²
④7a^5b^3c^5÷14a²b^3c=a^3c^4/2
⑤8a^4b^3c÷2a²b^3×(-2/3a^3bc²)=-8/3a^5bc^3
⑥(3x²y)²×(-15xy^3)÷(-9x^4y²)=-15xy^3
⑦(5m³n²-6m²)÷3m=3/5m²n²-2m
①r³
②y
③(x+y)²
④1/2 a³c⁴
⑤-8/3 a^5bc³
⑥15xy^3
⑦5/3m²n²-2m
柔柔弱弱 个房间飞兔兔
1,r^3 2,y 3,x^2 2xy y^2 4,1/2a^3c^4 5,-8/3a^5b4c^3 6,19xy^3 7,5/3m^2n^2-2m