对于整数a,b,c,d,符号|a b c d |表示运算顺序ad-bc,已知1

因为1a.b.c.d是整数,
且a.b.c.d.的运算顺序是ad-bc
所以ad-bc的绝对值是2
所以ad-bc的值为正负2

AD-BC=|ABCD | 1又可知 ABCD都是整数 那么可推得AB-CD所得亦是整数
又有1很简单的题哦 不要 忘记给分哈

因为a,b,c,d是整数,所以
ad-bc也是整数
而1

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