规定一种新运算:a*b=2a+3b,a#b=3a-2b,其中a,b为有理数.试化简a^2b*3ab+5a^2b#4ab

a²b*3ab=2(a²b)+3(3ab)=2a²b+9ab
5a²b#4ab=2(5a²b)+3(4ab)=10a²b+12ab
所以,
a²b*3ab+5a²b#4ab=12a²b+21a