What non-zero integer must be placed in the square so that the simplified product of these two binomials is a binomial: $(3x+2)(18x-\Box )$?
+2668 We want the term with the x to cancel out.
Currently, we have a \(36x\), so we need \(3xy = 36x \)
This can only be hieved when the square is \(\color{brown}\boxed{12}\)
