Question

What is the exact value for the expression √52-√13+√117? Simplify if possible.

4√13
√13
2√39
8√39

Answer 1

√52-√13+√117

sqrt (4*13) - sqrt (13) + sqrt (13*9)

sqrt(4)sqrt(13) -sqrt(13)+sqrt(13)sqrt(9)

2sqrt(13) -sqrt(13)+3sqt(13)

sqrt(13)[2-1+3]

4sqrt(13)

Choice A