题目内容
(-)÷(-)÷[×(-)]×0.25÷4
-
(+1.25)×(-9.7)×(-4)
去括号并合并同类项:
x-3(4-2m)
9-(-9)
(-+)÷(-)
19492-19502+19512-19522+…+19972-19982+19992
1-3+5-7+9-11+…+97-99
计算:
(+20)+(-3)+(-1)+(+4)+(-5)
试进行下列多项式的除法运算:
(1)(x-y)3(x+y)2÷[(x-y)(x+y)2];
(2)(x2-4)÷(x-2).