sin²30°+cos²30°+√8tan45°－6sin45°＋﹙-1﹚²º¹²=（sin²30°+cos²30°）+√8tan45°－6sin45°＋﹙-1﹚²º¹²=1+2√2*1-6*√2/2+1=1+2√2-3√2+1=2...