问题
计算题
因式分解
①3x3﹣12xy2
②am2﹣4am+4a.
答案
解:①3x3﹣12xy2,
=3x(x2﹣4y2),
=3x(x+2y)(x﹣2y);
②am2﹣4am+4a,
=a(m2﹣4m+4),
=a(m﹣2)2.
因式分解
①3x3﹣12xy2
②am2﹣4am+4a.
解:①3x3﹣12xy2,
=3x(x2﹣4y2),
=3x(x+2y)(x﹣2y);
②am2﹣4am+4a,
=a(m2﹣4m+4),
=a(m﹣2)2.