A:NaOH溶液
B:Ba(OH)2
C:盐酸
D:氨水
已知关于x,y的方程(2a+b)x|b|﹣1+(b﹣2)ya2-8=﹣8是二元一次方程,求a2的平方根.
- _________ are your new clothes?
- About ¥300. My mother bought it on Children's Day.
已知角α的终边经过点P(12,32),则tanα的值为____