Hi. I need help for an upcoming test tomorrow. I did some practice problems, can you guys please check if they're right? And if not, can you please do it and show me your work? I feel like I get the basic concept but I'm missing a few steps.

Complete the square for each expression. Write the resulting expression as a binomial squared.

23.

My answer

24. x^2 + 10x + _

My answer

25.

My answer

Solve each equation by completing the square (I feel I got these questions wrong)

26.

My answer

27.

My answer

I will also post questions about writing each function in vertex form, but right now I'm focused on this. Can you guys please see if I got anything wrong and if I did, can you please show me how you got the right answer? Also, it would be nice if you guys could explain it or even show a video. This is a great community and I would like to thank everybody who contributes on this website!