计算(1/3a²b^3).(-15a²b²)
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计算(1/3a²b^3).(-15a²b²)
计算(1/3a²b^3).(-15a²b²)
计算(1/3a²b^3).(-15a²b²)
(1/3a²b³)(-15a²b²)
=-15a²b²/3a²b³
=-5/b
原式 = -5(a^4)(b^5)
(1/3a^2b^3)(-15a^2b^2)
=(1/3)*(-15)a^(2+2)b^(3+2)
=-5a^4b^5