(t+3t^2-3)-(-t+4t^2) 化简
问题描述:
(t+3t^2-3)-(-t+4t^2) 化简
答
-(t-1)^2+2
答
(t+3t^2-3)-(-t+4t^2)=t+3t^2-3+t-4t^2=-t^2+2t-3=-(t^2-2t+1)-2
=-(t-1)^2-2