(-3a²)³*a³+(-4a)²*a7次方-(5a³)³
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(-3a²)³*a³+(-4a)²*a7次方-(5a³)³
(-3a²)³*a³+(-4a)²*a7次方-(5a³)³
(-3a²)³*a³+(-4a)²*a7次方-(5a³)³
=-27a的9次方+16a的9次方-15a的9次方
=-26a的9次方
(-3a²)³*a³+(-4a)²*a7次方-(5a³)³
(-3a²)³*a³+(-4a)²*a7次方-(5a³)³
(-3a²)³*a³+(-4a)²*a7次方-(5a³)³
=-27a的9次方+16a的9次方-15a的9次方
=-26a的9次方