-1²+(-1)³×二分之五+(2/3)²×(-7/2)²=
-1²+(-1)³×二分之五+(2/3)²×(-7/2)²=
(2²+4²+6²+.+98²+100²)-(1²+3&su
1÷[(-2)²×0.5²-(-2.24)÷(-2)³]-1又7/18
[2×(-1/2)²-3²×(-1/3)³]÷[1-(-1/2)³]
各位大虾们,1)(2a²)³•2²•a-(3a³) &s
计算:1】—(2ab)³+3ab x a²b²2】(—2x³)² x
1) -3²*1.2²/3²+(-1/3)²*(-3)³/(-1)
1、(3x²-2x²+5x-2)-( )=4x³-x²+5
4²+3²>2*4*3,(-2)²+1²>2*(-2)*1,2²+2&
1.计算:1²+4²+6²+7²=102,2²+3²+5&s
已知,a(a-1)-(a²-b)=2,求代数式ab-二分之a²+b²的值.
1²-2²+3²-4²+5²-6²+…-100²+