Answer:
Explanation:
50: 2 * 5 * 5
125:5 * 5 * 5
sqrt(50) = 5*sqrt(2) For every pair of primes, 1 of them is put outside the sqrt sign and one is discarded.
sqrt(125) = 5*sqrt(5) Same rule.
-2 sqrt(50) - sqrt(125)
-2*5*sqrt(2) - 5sqrt(5)
Answer: -10*sqrt(2) - 5sqrt(5)
You could write the answer as
Answer: -5(2sqrt(2) + sqrt(5) )
Comment: I don't know which answer you should use. I think the second one is more complete, but your marker may not agree.