简答题 1.(m+2)(m-1)-2m(m-2) 2.(x-y){3(y-x)}^2÷{1/3(y-x)^3} 3.(5×10^5)^2÷(2.5×10^3)×(-4×10^-7)^2 4.(-2x^a+1+6x^a+2-12x^a)÷(-24x^a-1)5.(-x^2)(-x^3)-2{(x^3)^3÷(-x^2)^2}6.8(x+y)^2÷2(x+y)

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简答题 1.(m+2)(m-1)-2m(m-2) 2.(x-y){3(y-x)}^2÷{1/3(y-x)^3} 3.(5×10^5)^2÷(2.5×10^3)×(-4×10^-7)^2 4.(-2x^a+1+6x^a+2-12x^a)÷(-24x^a-1)5.(-x^2)(-x^3)-2{(x^3)^3÷(-x^2)^2}6.8(x+y)^2÷2(x+y)
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简答题 1.(m+2)(m-1)-2m(m-2) 2.(x-y){3(y-x)}^2÷{1/3(y-x)^3} 3.(5×10^5)^2÷(2.5×10^3)×(-4×10^-7)^2 4.(-2x^a+1+6x^a+2-12x^a)÷(-24x^a-1)5.(-x^2)(-x^3)-2{(x^3)^3÷(-x^2)^2}6.8(x+y)^2÷2(x+y)
简答题
1.(m+2)(m-1)-2m(m-2) 2.(x-y){3(y-x)}^2÷{1/3(y-x)^3} 3.(5×10^5)^2÷(2.5×10^3)×(-4×10^-7)^2 4.(-2x^a+1+6x^a+2-12x^a)÷(-24x^a-1)5.(-x^2)(-x^3)-2{(x^3)^3÷(-x^2)^2}6.8(x+y)^2÷2(x+y)

简答题 1.(m+2)(m-1)-2m(m-2) 2.(x-y){3(y-x)}^2÷{1/3(y-x)^3} 3.(5×10^5)^2÷(2.5×10^3)×(-4×10^-7)^2 4.(-2x^a+1+6x^a+2-12x^a)÷(-24x^a-1)5.(-x^2)(-x^3)-2{(x^3)^3÷(-x^2)^2}6.8(x+y)^2÷2(x+y)
1.-3m^2+5m-2 2. -27 3. 16/10^6
4.8x^a-3/(24x^a+1 ) 5-x^5-2x^5 6. (x+y)/2

用计算机呀笨蛋

1.-3m^2+5m-2 2. -27 3. 16/10^6
4.8x^a-3/(24x^a+1 ) 5-x^5-2x^5 6. (x+y)/2