∵a,b是方程2x²-4mx+2m²+3m-2=0的两个实数根∴Δ=(-4m)²-4×2×(2m²+3m-2)≥0得：m≤2/3由韦达定理得：a+b=2m,ab=(2m²+3m-2)/2∴a²+b²=2(m-3/4)²+7/8=2(3/4-m)²+7/8∵...