> 数学 >
计算(^2-2x+5)^2-2(^2-2x+5)(x^2-2x-3)+(x^2-2x-3)^2=[( )-( )]^2=?
人气:102 ℃ 时间:2020-01-30 08:00:58
解答
(x^2-2x+5)^2-2(x^2-2x+5)(x^2-2x-3)+(x^2-2x-3)^2
=[(x^2-2x+5 )-( x^2-2x-3)]^2
=(5+3)²
=64
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版