Hello, Dont rly get these questions, appreciate if u help.

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.

Heya dear

df =

both have same length

A=l×wa=(8x+6) (13x+11)a=104x➋+166x+66