E X P A N D
This math question is actually a lot harder than you might think. (a + b)n would probably equal an + ab + bn to some people, but without knowing what the value of n is, you can’t get a definitive answer. If it’s 3, the answer would be a3 + 3a2b + 3ab2 + b3. That’s why you should question your teachers during every examination.
Or you could be a smart aleck and literally expand the equation. Just keep adding spaces in between the characters until you’ve reached both sides of your exam sheet. This is the real answer.