│2a-3b-7│+(2a+3b-1)²=0 求：(2ab²)²*(3/4ab)-(-3/

2a-3b-7=0
2a+3b-1=0
∴a=2
b=-1
：(2ab²)²*(3/4ab)-(-3/2a²b)²
=4a²b^4×3ab/4-9a^4b²/4
=3a³b^5-9a^4b²/4
=-24-36
=-60