x²-√3x-1/4=0 x²-√3x+3/4=1/4+3/4 (x-√3/2)²=1 x-√3/2=1或 x-√3/2=-1 x=1+√3/2或x=√3/2-1
.3x²-6x-2=0 x²-2x-2/3=0 x²-2x+1=1+2/3 (x-1)²=1+2/3 x-1=√(1+2/3) 或 x-1=...
x²-√3x-1/4=0 x²-√3x+3/4=1/4+3/4 (x-√3/2)²=1 x-√3/2=1或 x-√3/2=-1 x=1+√3/2或x=√3/2-1
.3x²-6x-2=0 x²-2x-2/3=0 x²-2x+1=1+2/3 (x-1)²=1+2/3 x-1=√(1+2/3) 或 x-1=...