几道数学题,化简.3a^b-[2ab-2(a^2b+2ab^2)]x(-6x-9)-x(-8x-15)+2X(3-X)7X^3Y^2/[(-7X^5Y^3)/(-1/3X^3Y^2)]
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![几道数学题,化简.3a^b-[2ab-2(a^2b+2ab^2)]x(-6x-9)-x(-8x-15)+2X(3-X)7X^3Y^2/[(-7X^5Y^3)/(-1/3X^3Y^2)]](/uploads/image/z/1602704-56-4.jpg?t=%E5%87%A0%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E5%8C%96%E7%AE%80.3a%5Eb-%5B2ab-2%28a%5E2b%2B2ab%5E2%29%5Dx%28-6x-9%29-x%28-8x-15%29%2B2X%283-X%297X%5E3Y%5E2%2F%5B%28-7X%5E5Y%5E3%29%2F%28-1%2F3X%5E3Y%5E2%29%5D)
几道数学题,化简.3a^b-[2ab-2(a^2b+2ab^2)]x(-6x-9)-x(-8x-15)+2X(3-X)7X^3Y^2/[(-7X^5Y^3)/(-1/3X^3Y^2)]
几道数学题,化简.
3a^b-[2ab-2(a^2b+2ab^2)]
x(-6x-9)-x(-8x-15)+2X(3-X)
7X^3Y^2/[(-7X^5Y^3)/(-1/3X^3Y^2)]
几道数学题,化简.3a^b-[2ab-2(a^2b+2ab^2)]x(-6x-9)-x(-8x-15)+2X(3-X)7X^3Y^2/[(-7X^5Y^3)/(-1/3X^3Y^2)]
3a^b-[2ab-2(a^2b+2ab^2)]
=3a²b-(2ab-2a²b-2ab²)
=3a²b-2ab+2a²b+2ab²
=5a²b+2ab²-2ab
x(-6x-9)-x(-8x-15)+2X(3-X)
=-6x²-9x+8x²+15x+6x-2x²
=12x
7X^3Y^2/[(-7X^5Y^3)/(-1/3X^3Y^2)]
=7x³y²/(-7x^5y³)*(-1/3x³y²)
=1/3xy²
3a^b-[2ab-2(a^2b+2ab^2)]
=3a^b-[2ab-2a^2b-4ab^2]
=3a^b-2ab+2a^2b+2ab^2
x(-6x-9)-x(-8x-15)+2X(3-X)
=-6x^2-9x+8x^2+15x+6x-2x^2
=12x
7X^3Y^2/[(-7X^5Y^3)/(-1/3X^3Y^2)]
=7X^3Y^2/[21x^2y]
=1/3xy
首先 你这里的^是什么运算法则啊 如果是 平方 那么第一个人回答的对 如果是其他的法则 那就是第二人说的对