解1题 ^ 表示乘方原式=[(-x²y³)(x³y)]^5=[-1×(x²×x³)×(y³×y)]^5=[-1×x^(2+3)×y^(3+1)]^5=[-1×(x^5)×(y^4)]^5=(-1)^5×x^(5×5)×y^(4×5)= -(x^25)(y^20)解2题原式=(-b²)³×(-b³)²×b^4=(-1)³×b^(2×3)×(-1)²×b^(3×2)×b^4=-1×(b^6)×(b^6)×b^4=-1×b^(6+6+4)= -b^16