计算:1x2+2x3+3x4+……+49x50 计算:(1-3/8)+(1-3/15)+(1-3
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41650
9+29/44
相关问题
计算1x2x3+2x3x4+…+48x49x50
小学数计算题学题,1/1x2+1/2X3+1/3X4+.1/49x50=?
1/2x4 +1/2x3 +1/3x4 +.+1/49x50
1/1x2+1/2x3+1/3x4.1/49x50
1x2\1+2x3\1+3x4\1+.+49x50\1
计算:1.(4a²-3)(4a²+8) 2.(3x+1)(x+1)-(2x-1)(x-1)-3x(x
1/1X2X3+1/2X3x4+…+1/48X49X50
用公式法计算:1:(3x-1\2)(-1\2+3x)(-1\4-9x²)2:51²+49²
1/1x2+1/2x3+1/3x4+1/4x5+.1/49x50
1/(2X-4)-3/8X=3/(4X-8)-1/3X.计算该分式方程.