计算:(1)a3?a2=________,
(2)(-3x2y)2=________,
(3)2m2n?(-5m4)=________,
(4)(x+1)(x-6)=________,
(5)(6a2-10ab+2a)÷2a=________,
(6)(x+2y)2=________.
网友回答
解:(1)a3?a2=a3+2=a5;
(2)(-3x2y)2=(-3)2x4y2=9x4y2;
(3)?2m2n?(-5m4)=-10m2+4n=-10m6n;
(4)(x+1)(x-6)=x2-6x+x-6=x2-5x-6;
(5)(6a2-10ab+2a)÷2a=6a2÷2a-10ab÷2a+2a÷2a=3a-5b+1;
(6)(x+2y)2=x2+2x?2y+4y2=x2+4xy+4y2.
解析分析:(1)根据同底数幂相乘,底数不变,幂相加即可得出