W=-2t²+8t-2t怎么配方?
问题描述:
W=-2t²+8t-2t怎么配方?
答
= -2t²+6t= -2(t²-3t)= -2(t²-3t+6/4-6/4) = -2(t-3/2)^2+3
W=-2t²+8t-2t怎么配方?
= -2t²+6t= -2(t²-3t)= -2(t²-3t+6/4-6/4) = -2(t-3/2)^2+3