[186-x]×0.56
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展开式的通项为Tr+1=(−12)rCr10x30−5r令30-5r=0得r=6故展开式的常数项为(−12)6C610=10532故答案为10532
x+1.8x=0.562.8x=0.56x=0.56/2.8x=0.2
(1)0.3x+13=25, 0.3x+13-13=25-13, &nb
(1)5(x+2)=2(2X+7)5x+10=4x+145x-4x=14-10x=4(2)0.6(x-0.4)+3.8=1.2x+0.560.6x-0.24+3.8=1.2x+0.56-0.56-0.
被开方式非负,分母不为0,0的0次幂没有意义∴2-x≥0且2x²-3x-2≠0,且x+1≠0∴x≤2且x≠2且x≠-1/2且x≠-1∴定义域是(-∞,-1)U(-1,-1/2)U(-1/2,
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x²(2x)³-x(3x+8xº)=x²8x³-3x²-8x^5=8x^5-3x²-8x^5=-3x²=-3*4=-12
33.8x-x=0.5632.8x=0.56x=0.56÷32.8x=56/3280x=7/410如果本题有什么不明白可以追问,再问:我是小学生诶,四年级
x-1/2≠0且x>=0解得定义域为[0,1/2)∪(1/2,+∞)再问:有几个选项A.(-2,½)B.(-2,+∞)C.(-2,½)∪(½,+∞)D.(&f
x=0.04谢谢~~~~~再问:告诉我过程再答:好的~6x+8x=0.5614x=0.56x=0.56/14∴x=0.04采纳吧~~~再问:好的
3.8x-x=0.562.8x=0.56x=0.56÷2.8x=0.2
3.8x-x=0562.8x=0.56x=0.56/2.8x=0.2
再答:望采纳
x=1,0,-1x^2-2x+1-3=(x-1)^2-3=1(x-1)^2=4x-1=2x=3
3.8x-x=0.562.8x=0.56x=5.6/28x=0.2
0.6x-0.24+3.8=1.2x+0.560.6x=3.8-0.56-0.240.6x=3x=5
解题思路:同学你好,本题利用同角三角函数的基本关系求解,具体过程见解析解题过程: