(3分之1a^2b^3).(-15a^2b^2) 要步骤详细

问题描述:

(3分之1a^2b^3).(-15a^2b^2) 要步骤详细


(3分之1a^2b^3)·(-15a^2b^2)
=-(1/3×15) a^(2+2)b^(3+2)
=-5a^4b^5