-2^3-(-2)^2+(-3)^2-(-1)^3(-2xy^2)^2(-0.5x^2y^3)(-2/3x^2y^3)(x-2y+1)（x+2y-1）5*399/8+5*1/8(x-2y)(x+2y)(x^2-4y^2)

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-2^3-(-2)^2+(-3)^2-(-1)^3(-2xy^2)^2(-0.5x^2y^3)(-2/3x^2y^3)(x-2y+1)（x+2y-1）5*399/8+5*1/8(x-2y)(x+2y)(x^2-4y^2)
-2^3-(-2)^2+(-3)^2-(-1)^3
(-2xy^2)^2(-0.5x^2y^3)(-2/3x^2y^3)
(x-2y+1)（x+2y-1）
5*399/8+5*1/8
(x-2y)(x+2y)(x^2-4y^2)

-2^3-(-2)^2+(-3)^2-(-1)^3(-2xy^2)^2(-0.5x^2y^3)(-2/3x^2y^3)(x-2y+1)（x+2y-1）5*399/8+5*1/8(x-2y)(x+2y)(x^2-4y^2)
-2^3-(-2)^2+(-3)^2-(-1)^3=-2
(-2xy^2)^2(-0.5x^2y^3)(-2/3x^2y^3)题不对
x-2y+1)（x+2y-1）=x^2-4y^2+4y-1
5*399/8+5*1/8
=250
(x-2y)(x+2y)(x^2-4y^2) 题目不对吧应该是(x-2y)(x+2y)(x^2+4y^2)
=(x^2-4y^2)^2

次数2 2 3 2 2 2 3/2-/2/3-2+3等于? 2 1 -2 -3 2 3(2)共三题 2^3-2^4 |-2|-3²×(-2) 2,3, 2,3 2 3 2 3 2 3 2,3, 2,3, -2/3 -2/3 2 3 2,3, 2,3,