Question

把一般式转化为顶点式1）y=1/2x^2-2x-12) y=4x^2-24x=26

Answer 1

1）y=1/2x^2-2x-1

=(1/2)(x^2-4x+4)-3

=(1/2)(x-2)^2-3;

2) y=4x^2-24x+26

=4(x^2-6x)+26

=4(x^2-6x+9-9)+26

=4(x-3)^2-10.