【(-3)²-(-5)²】÷(-2)
2×(-5)+2²-3÷2分之1
(1)-18÷(-3)²+5×(-1/2)³-(-15)÷5
[(-3a∧5)²÷(-a²)³+3a²(2a²-4a)]÷(-3a&
(1-2²)+3²-4²+5²-6²+7²-8²+
计算:-2/3×[3²×(-2/3)²+(-2)³]÷(-18/5)
-3-[-5+(1-1/(0.2的2次方)*3)÷(-2)²]
计算-3²-/(-5)的立方/×(-2/3)²-18÷/-(-3)的平方/
计算:(1)2m²n/3pq²乘5p²q/4mn²÷5mnp/3q,(2)16-
3²-2²)²+(4²-3²)²+(5²-…………
-2³÷4/9×(-2/3)²+(-0.8)-5×(-1/4)
计算题:(1)√5(2√5+√5)-2 (2)(√3-√2)√3+(-2)²÷(-1)².
计算[5xy²(x²-3xy)-(-3x²y²)³]÷(-5xy)