15√50 + 8√210
= 15√25 √2 + 8√210 broke down √50, but 210 does not break into two factors where one is a perfect square
= 15(5)√2 + 8√210 evaluated √25 to be 5
= 75√2 + 8√210 multiplied 15 by 5

That's as far as it simplifies without going to decimals.

15√50 + 8√210
= 15√25 √2 + 8√210 broke down √50, but 210 does not break into two factors where one is a perfect square
= 15(5)√2 + 8√210 evaluated √25 to be 5
= 75√2 + 8√210 multiplied 15 by 5

That's as far as it simplifies without going to decimals.