How do you add 13\sqrt { 21x ^ { 13} } + 10\sqrt { 21x ^ { 13} }?

1 Answer
Nov 16, 2017

23sqrt(21x^(13))

Explanation:

There's a common factor sqrt(21x^(13)) which we can take out,
sqrt(21x^(13))(13+10)

as 13+10=23 we can simplify,
sqrt(21x^(13))(23)

and we write it "correctly",
23sqrt(21x^(13))