When k is a real number, the equation x ^ 2 + (2k + 3) x + (k-1) ^ 2 = 0 about X has two unequal roots of real numbers

When k is a real number, the equation x ^ 2 + (2k + 3) x + (k-1) ^ 2 = 0 about X has two unequal roots of real numbers

There must be two unequal real roots
∴△>0
That is: (2k + 3) & sup2; - 4 (k-1) & sup2; > 0
4k²+12k+9-4k²+8k-4>0
20k+5>0
k>-1/4
Upstairs is based on my writing, he should see my answer is wrong
So what he wrote was very simple