Practice problem
What does (3+6)+5=?\left(3+6\right)+5={?}(3+6)+5=?
(3+5)+3(3+5)+3(3+5)+3
(6+5)+3(6+5)+3(6+5)+3
(5+3)+6(5+3)+6(5+3)+6
3+(5+6)3+(5+6)3+(5+6)
Type a concept, like “slope” or “photosynthesis”.