(1)(-4a^3+6a^3b 3a^3b^3)÷(-4a^2);(2)(6a^2b-5a^2c^2)÷(-3a^2)要过程,快!
2015-03-19
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(1)(-4a^3+6a^3b +3a^3b^3)÷(-4a^2);
=-4a^3÷(-4a^2)+6a^3b÷(-4a^2)+3a^3b^3÷(-4a^2)
=a+(-2分之3ab)+(-4分之3ab^3)
=a-2分之3ab-4分之3ab^3
(2)(6a^2b-5a^2c^2)÷(-3a^2)
=6a^2b÷(-3a^2)-5a^2c^2÷(-3a^2)
=-2b+3分之5c^2
=-4a^3÷(-4a^2)+6a^3b÷(-4a^2)+3a^3b^3÷(-4a^2)
=a+(-2分之3ab)+(-4分之3ab^3)
=a-2分之3ab-4分之3ab^3
(2)(6a^2b-5a^2c^2)÷(-3a^2)
=6a^2b÷(-3a^2)-5a^2c^2÷(-3a^2)
=-2b+3分之5c^2
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