What are the variables and coefficients on the problem 5.4 times 2 + 2.8 times 2

So remember that variables are variable or in other words they can change  like x

coeficients are things that yo uknow like 2,5,3/5

so since all of them are numbers, all  of them are coeficients

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.