问题
填空题
计算:(-2x3)2=______,(x-2y)(x+2y)=______.
答案
(-2x3)2=4x6,
(x-2y)(x+2y)=x2-(2y)2=x2-4y2.
故答案是:4x6,x2-4y2.
计算:(-2x3)2=______,(x-2y)(x+2y)=______.
(-2x3)2=4x6,
(x-2y)(x+2y)=x2-(2y)2=x2-4y2.
故答案是:4x6,x2-4y2.