I like winter, because I can play _______ snow in winter. A. and B. with C. or
如果2x+3=10,那么4x﹣3就等于( )
已知□=2△,(△≠0)下面四个算式中,结果等于的是( )
当x=4时,4x2+0.2=( )A.12.2 B.256.2 C.64.2
2x+x=( )A.3x B.x3 C.2x2
当a=1.2,b=2.5,c=3时,3a﹣b+1.4c的值是( )