1.(5x^2y^3)^2÷(25x^4y^5)2.(x+y)^3÷(x+y)3.(7a^5b^3c^5)÷(14a^2b^3c)4.(8a^4b^3c)÷(2a^2b^3)·(-2/3a^3bc^2)5.(3x^2y)·(-15xy^3)÷(-9x^4y^2)用整式除法计算,

Question

1.(5x^2y^3)^2÷(25x^4y^5)
2.(x+y)^3÷(x+y)
3.(7a^5b^3c^5)÷(14a^2b^3c)
4.(8a^4b^3c)÷(2a^2b^3)·(-2/3a^3bc^2)
5.(3x^2y)·(-15xy^3)÷(-9x^4y^2)
用整式除法计算,

Answer 1

1.(5x^2y^3)^2÷(25x^4y^5)
=25x^4y^6÷(25x^4y^5)
=y^6÷y^5
=y
2.(x+y)^3÷(x+y)
=(x+y)^(3-1)
=(x+y)^2
3.(7a^5b^3c^5)÷(14a^2b^3c)
=(7÷14)*a^(5-2)b^(3-3)c^(5-1)
=1/2a^3c^4
4.(8a^4b^3c)÷(2a^2b^3)·(-2/3a^3bc^2)
=[8÷2*(-2/3)]*a^(4-2+3)b^(3-3+1)c^(1+2)
=[4*(-2/3)]*a^5bc^3
=-8/3a^5bc^3
5.(3x^2y)·(-15xy^3)÷(-9x^4y^2)
=(3x^2y)·(15xy^3)÷(9x^4y^2)
=(3*15÷9)x^(2+1-4)y^(1+3-2)
=(45÷9)x^(-1)y^2
=5x^(-1)y^2
=5y^2/x