How do i make this a product?

i tried solving it, but i ended up getting the incorrect answer. here’s what i did:

a-b+a^2-b^2
(a-b)+(a-b)(a+b)
2(a-b)(a+b)

what did i do wrong?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]