问题
解答题
(1)计算:(-2)3×
(2)分解因式:x3y-6x2y2+9xy3. |
答案
(1)原式=-8×4-3+1
=-32-3+1
=-34;
(2)原式=xy(x2-6xy+9y2)
=x(x-3y)2.
(1)计算:(-2)3×
(2)分解因式:x3y-6x2y2+9xy3. |
(1)原式=-8×4-3+1
=-32-3+1
=-34;
(2)原式=xy(x2-6xy+9y2)
=x(x-3y)2.