Factorise 3(x-y)^2 - 2(x-y)

1. what is the measure of ∠abc? what is the measure of ∠abd?

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2