Missing angle problems!!

just the answer to even 1 of them is appreciated

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.

Solving algebraic equations 2m+3=11