将2x²-4x+3进行变形后,其结果正确的是 A.2(x-2)²-1 B.2(x-1)²+1 C.2(x-1)²+2

问题描述:

将2x²-4x+3进行变形后,其结果正确的是 A.2(x-2)²-1 B.2(x-1)²+1 C.2(x-1)²+2
将2x²-4x+3进行变形后,其结果正确的是
A.2(x-2)²-1B.2(x-1)²+1C.2(x-1)²+2D.2(x+1)²+1

2(x^2-2x)+3
=2(x^2-2x+1-1)+3
=2(x-1)^2-2+3
=2(x-1)^2+1
B