Question

What are the square roots of 256? A. 15 and –15 B. 16 and –16 C. 25 and –25 D. 128 and –128

Answer 1

B: 16 and -16
two negatives = a positive
two positives make a positive :)

Answer 2

16 and -16. If you do it on your calculator, it should say 16.