我是数学白痴一枚 45x2.08+1.5x37.652x11.1+2.6x77848x1.08+1.2x5

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/23 14:26:15

我是数学白痴一枚
45x2.08+1.5x37.6
52x11.1+2.6x778
48x1.08+1.2x56.8
72x2.09-1.8x73.6
用简便运算

45x2.08+1.5x37.6
=4.5x20.8+1.5x37.6
=1.5x3x20.8+1.5x37.6
=1.5x(3x20.8+37.6)
=1.5x(62.4+37.6)
=1.5x100
=150
52x11.1+2.6x778
=26x2x11.1+26x77.8
=26x(22.2+77.8)
=26x100
=2600
48x1.08+1.2x56.8
=48x1.08+1.2x40x1.42
=48x(1.08+1.42)
=48x2.5
=12x4x2.5
=12x10
=120
72x2.09-1.8x73.6
=72x2.09-1.8x40x1.84
=72x2.09-72x1.84
=72x(2.09-1.84)
=72x0.25
=18x4x0.25
=18

1x2+2x3+3x4+4x5+……+10x11 毕竟我是数学白痴呀. 因式分解:X15+X14+X13+X12+X11+X10+X9+X8+X7+X6+X5+X4+X3+X2+X+1 3-6题我是数学白痴啊泪崩感激不尽! 2x2/1x3+4x4/3x5+6x6/5x7+8x8/7x9+10x10/9x11+12x12/11x13 仔细看看求解最佳方案X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 我是英语白痴的. 我是数学白痴.求解数学题. 有没有数学天才,我是数学白痴 model:Min=x1+x2+x3+x4+x5+x6+x7+x8+x9+x10+x11+x12+x13+x14+x15 第6题,我是化学白痴帮我一下我是英语白痴