问题详情:分解因式:ax2﹣9ay2= .【回答】a(x+3y)(x﹣3y) .【解答】解:原式=a(x2﹣9y2)=a(x+3y)(x﹣3y).故*是:a(x+3y)(x﹣3y).知识点:因式分解题型:填空题