判别式Δ=b²-4ac=[-(4m-1)]²-4×2×(-m²-m)=(4m-1)²+8m²+8m=16m²-8m+1+8m²+8m=24m²+1无论m为何值m²≥0 ,所以24m²+1>0所以判别式Δ恒为正所以无论M 取何值时,方程...