f(x)=x²-4x+6,x≥0 x+6, x<0f(1)=3f(x)>31)x≥0x²-4x+6>3x²-4x+3>0(x-3)(x-1)>0x>3 x<10≤x<1 x>32)x<0x+6>3x>-3-3∴-33