The answer is.... B!!
This is the answer because if you fill in X as 4, then you would end up with 16 and the square root of 16 is 4!!
I hope this helps!!
Factors of 26: <u>1</u>, <u>2,</u> 13, 26 (1 × 26, 2 × 13)
Factors of 42: <u>1</u>, <u>2</u>, 3, 6, 7, 14, 21, 42 (1 × 42, 2 × 21, 3 × 14, 6 × 7)
The greatest common factor they have is 2
