计算:(32.8×91-16.4×92-1.75×656)÷(0.2)²
计算:(32.8×91-16.4×92-1.75×656)÷(0.2)²
数学因式分解计算(a²-b²)/(a²b-ab²)÷ [1+(a²+b
一道巧算题(0.1²+0.2²+0.3²+0.4²)²÷(0.1&su
分式计算,((x+1)²(1-x)²)/((x²-1)²)÷((x-1)²)/(
计算:[(x²-2x+1)/(x²-1)]÷[(x-1)(x²+x)]-x
lg5)²-(lg2)²+2lg2计算过程
a²-b²(用平方计算)
计算:(1-x/3-x)²÷(x²-6x+9/9-x²)²•1/(x
计算:(2x+y-1)²
(a+b)/(2a+2b)乘(a²+b²)/(a²-b²) 计算
计算:3(2x²-3xy²)-2(2xy²-3x²y)
因式分解:16(x-y)²-9(x-y)² 用简便方法计算 202²-54²+2