How do you simplify #sqrt74#?
When we simplify radicals (anything with a root sign), we try to only write only whole numbers (no fractions, no long decimals). For this to happen, the number under the root sign has to have a factor which is a square number. Examples include:
Unfortunately, 74 doesn't have a factor which is a square number (74's factors are 2 and 37), so we can't proceed with simplifying it.