Is BCD a straight line?

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

Me with this one question, and i'll upvote the brainliest answer

[15 points, algebra 2]simplify the complex fraction and find the restrictions.