问题
填空题
与单项式-3a2b的积是6a3b2-2a2b2+9a2b的多项式是______.
答案
(6a3b2-2a2b2+9a2b)÷(-3a2b)
=6a3b2÷(-3a2b)-2a2b2÷(-3a2b)+9a2b÷(-3a2b),
=-2ab+
b-3.2 3
故应填:-2ab+
b-3.2 3
与单项式-3a2b的积是6a3b2-2a2b2+9a2b的多项式是______.
(6a3b2-2a2b2+9a2b)÷(-3a2b)
=6a3b2÷(-3a2b)-2a2b2÷(-3a2b)+9a2b÷(-3a2b),
=-2ab+
b-3.2 3
故应填:-2ab+
b-3.2 3