负9分之5的2次方减4等于多少,
问题描述:
负9分之5的2次方减4等于多少,
答
(-5/9)²-4
=25/81-4
=25/81-324/81
=-299/81
负9分之5的2次方减4等于多少,
(-5/9)²-4
=25/81-4
=25/81-324/81
=-299/81