x²-√2x=1/2x²-√2x+1/2=1/2+1/2(x-√2/2)²=1x-√2/2=±1x=(√2+2)/2,x=(√2-2)/2x²+7x/2=3/2x²+7x/2=49/16=3/2+49/16(x+7/4)²=73/16x+7/4=±√73/4x=(-7-√73)/4,x=(-7+√73)/4...