Simplify: x2 + 5x + 6(x + 3) x 42x + 4
4
2
2(x + 2)
(x + 2)

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

)because it's going in order of the math sign