(-2x^2)^3*(y^2+x^2+x^2y^2)的结果中,次数为10的项的系数是多少?
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![(-2x^2)^3*(y^2+x^2+x^2y^2)的结果中,次数为10的项的系数是多少?](/uploads/image/z/6997365-45-5.jpg?t=%28-2x%5E2%29%5E3%2A%28y%5E2%2Bx%5E2%2Bx%5E2y%5E2%29%E7%9A%84%E7%BB%93%E6%9E%9C%E4%B8%AD%2C%E6%AC%A1%E6%95%B0%E4%B8%BA10%E7%9A%84%E9%A1%B9%E7%9A%84%E7%B3%BB%E6%95%B0%E6%98%AF%E5%A4%9A%E5%B0%91%3F)
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(-2x^2)^3*(y^2+x^2+x^2y^2)的结果中,次数为10的项的系数是多少?
(-2x^2)^3*(y^2+x^2+x^2y^2)的结果中,次数为10的项的系数是多少?
(-2x^2)^3*(y^2+x^2+x^2y^2)的结果中,次数为10的项的系数是多少?
因为(-2x^2)^3*(y^2+x^2+x^2y^2)
=-8x^6*(y^2+x^2+x^2y^2)
=-8x^6y^2-8x^8-8x^8y^2,
而结果中次数为10的项是-8x^8y^2,
所以它的系数是-8.
次数为10的项的系数是(-2)^3=-8
10的项是:(-2)^3x^8y^2,它的系数是(-2)^3=-8
10
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