化简成a(x+m)²+n的形式:2x²-x+3

问题描述:

化简成a(x+m)²+n的形式:2x²-x+3

2(x-1/4)^2+23/8.

2x²-x+3
=2(x²-x/2+1/16-1/16)+3
=2(x-1/4)²-1/8+3
=2(x-1/4)²+23/8