GWD 5-7

dlmd

Q7:

√[2√63 + 2/(8+3√7)] =

A. 8 + 3√7

B. 4 + 3√7

C. 8

D. 4

E. √7

The question is not clear, would you tell me how to get D as the answer? thanks

dlmd

lol , it's 2/(8+3√7) 2 divided by (8+3√7), I thought it's 2 root (8+3√7)