How do you evaluate the expression #136 - sqrt57 #?

1 Answer
Feb 22, 2018

Answer:

#136-sqrt57~~128.45#

Explanation:

This expression cannot be simplified any further, as #57# doesn't have a factor that's a perfect square other than #1#. #3# and #19# are not perfect squares.

We can directly take the square root of #57#, however:
#sqrt57# is approximately #7.55#, and we can subtract this from #136# to get #128.45.#NOTE: This is only an approximation.