二次函数配方过程3.y=-2x^2+8x-84.y=1/2x^2-4x+35.y=1/3x^2+3,6.y=1/3x^2-27.y=-1/4(x+2)^28.y=-1/4(x-1)^29.y=1/2(x+2)^2-210.y=1/2(x-1)^2+2

Question

二次函数配方过程
3.y=-2x^2+8x-8
4.y=1/2x^2-4x+3
5.y=1/3x^2+3,
6.y=1/3x^2-2
7.y=-1/4(x+2)^2
8.y=-1/4(x-1)^2
9.y=1/2(x+2)^2-2
10.y=1/2(x-1)^2+2

Answer 1

3.y=-2x^2+8x-8=-2(x-2)^24.y=1/2x^2-4x+3=(x-4)²/2-55.y=1/3x^2+3=x²/3+36.y=1/3x^2-2=x²/3-27.y=-1/4(x+2)^2=-(x+2)²/48.y=-1/4(x-1)^2=-(x-1)²/49.y=1/2(x+2)^2-2=(x+2)²/2-210.y=...