(-2a^2×b^3)+8(a^2)^2×(-a)^2×(-b)^3

问题描述:

(-2a^2×b^3)+8(a^2)^2×(-a)^2×(-b)^3

原式=-2a^2b^3-8a^4*a^2*b^3
=-2a^2b^3-8a^6b^3
=-2a^2b^3(4a^4+1)