作业帮3道计算,1)(x^2)·(x^3y^2)÷x^12 2)(2a^2y)^3÷(-1/2a^5y^2)(-2ay) 3)(m+n)(m-n)[mn-(m+n)^2][(m-n)^2+mn)]
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/15 13:49:24
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3道计算,1)(x^2)·(x^3y^2)÷x^12 2)(2a^2y)^3÷(-1/2a^5y^2)(-2ay) 3)(m+n)(m-n)[mn-(m+n)^2][(m-n)^2+mn)]
3道计算,
1)(x^2)·(x^3y^2)÷x^12
2)(2a^2y)^3÷(-1/2a^5y^2)(-2ay)
3)(m+n)(m-n)[mn-(m+n)^2][(m-n)^2+mn)]
3道计算,1)(x^2)·(x^3y^2)÷x^12 2)(2a^2y)^3÷(-1/2a^5y^2)(-2ay) 3)(m+n)(m-n)[mn-(m+n)^2][(m-n)^2+mn)]
1)(x^2)·(x^3y^2)÷x^12 =x^5y^2÷x^12=x^-7y^2
2)(2a^2y)^3÷(-1/2a^5y^2)(-2ay)
=8a^6y^3÷(a^6y^3)
=8
3)(m+n)(m-n)[mn-(m-n)^2][(m-n)^2+mn)]
=(m²-n²
这个题目是错的
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