(-3)²÷9+(-3)×5+2×(-2)²
-2³÷4/9×(-2/3)²+(-0.8)-5×(-1/4)
2×(-5)+2²-3÷2分之1
(-3)³÷9/4×(-2/3)²+4-2²×(-1/3)
(m²-6mn+9n²)÷(m-3n)-(4m²-9n²)÷(2m-3n)化简,
(-0.25)*2/5*8-9/(-3/2)²
计算:-2/3×[3²×(-2/3)²+(-2)³]÷(-18/5)
计算:(-2)³×9/4+(-3/2)²÷(-1/2)³
(1)-18÷(-3)²+5×(-1/2)³-(-15)÷5
(m²-6mn+9n²)÷(m-3n)-(4m²-9n²)-(2m-3n)怎么做
[(-3a∧5)²÷(-a²)³+3a²(2a²-4a)]÷(-3a&
(1-2²)+3²-4²+5²-6²+7²-8²+
-3-[-5+(1-1/(0.2的2次方)*3)÷(-2)²]