计算2x^3乘以(-3x)^2= ,(ab)^2\ab^2= .

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计算2x^3乘以(-3x)^2= ,(ab)^2\ab^2= .

计算2x^3乘以(-3x)^2= ,(ab)^2\ab^2= .
计算2x^3乘以(-3x)^2= ,(ab)^2\ab^2= .

计算2x^3乘以(-3x)^2= ,(ab)^2\ab^2= .
2x^3*(-3x)^2
=2x^3*9x^2
=18x^5
(ab)^2/ab^2
=a^2b^2/ab^2
=a