3a^2b-[2a^2b-（2abc-a^2才）-4a^2c]-2abc,其中a=0.1
b=70,c=10
人气：116 ℃ 时间：2019-10-19 16:00:06
解答
3a²b-[2a²b-（2abc-a²c）-4a²c]-2abc=3a²b-2a²b+2abc-a²c+4a²c-2abc=a²b+3a²c=0.1²×70+3×0.1²×10=0.7+0.3=1
推荐
- 先化简,再求值 当a=0.5,b=70,c=10,求代数式3a^2b-[2a^2b-（2abc-a^2c-4a^2c）]-2abc的值
- 先化简再求值:3a^2b-[2a^2b-(2abc-a^2b)-4a^2c]-abc,其中a=-2,b=-3,c=1
- 计算3a^2bc乘（-2abc^2)-12a^5b^4c^7除以(-4a^2b^2c^4)
- 化简1/2a^2-5ac-(3a^2c-a^2b)+(3ac-4a^2c)
- （-3a^2b^5c^2+2a^2b^2c^2－4a^4b^2c^3）÷（-2a^2b^2c^2）计算
- When love beckons to you,follow him,though his ways are hard and steep.And when his wings enfold you,yield to him,though
- In order to study the s____in Russia ,Marx began to learn Russian in his sixties.
- 函数y=3|x|的递减区间是_．（用区间表示）
猜你喜欢
