True or false HELP me

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*