How to write a solution to the equation x^2=5 using exponents and radicals

What is the radical expression that is equivalent to the expression 27 1 over 5?

I’m not good at math can i have ? ?

The price of a lawn mower is x dollars. the store is having a 75% end of summer clearance sale. which expression can be used to find the clearance price of the mower? a) .25x b) .75x c) x - .25(75) d) x + .25(75)