Please help on A, kind of lost on next steps, please double check work on B. Thank you.
20. Rationalize the denominator of the radical expression. Assume all variables represent nonnegative numbers and that no denominators are 0. (See section R.7, Example 12.) [5 points] a. V21+y49 lmultiply top and re-write denominator . (774 top (V3)-(7
