问题
解答题
(1)(-2xy)2+3xy-4x2y÷(-2x);
(2)0.125100×8100.
答案
(1)原式=4x2y2-6x2y2
=-2x2y2;
(2)原式=8-100•8100
=8(-100+100)
=80
=1.
(1)(-2xy)2+3xy-4x2y÷(-2x);
(2)0.125100×8100.
(1)原式=4x2y2-6x2y2
=-2x2y2;
(2)原式=8-100•8100
=8(-100+100)
=80
=1.