函數(shù)向右平移兩個y=a（x-2）^2+b(x-2)+c向上平移2個y=a（x-3）^2+b(x-2)+c+2=a(x^2-6x-9)+bx-2b+c+2=ax^2-6ax-9a+bx-2b+c+2=ax^2+(b-6a)x+(c+2-2b-9a)=x^2-3x+5a=1,b-6a=-3,c+2-2b-9a=5解得a=1,b=3,c=18...y=a（x-3）^2+b(x-3)+c+2
=a(x^2-6x+9)+bx-3b+c+2
=ax^2-6ax+9a+bx-3b+c+2
=ax^2+(b-6a)x+(c+2-3b+9a)
=x^2-3x+5
a=1,b-6a=-3，c+2-3b+9a=5
解得a=1，b=3,c=3