W=√[2√63 + 2/(8+3√7)] = Pick:
A) 8 + 3√7 B) 4 + 3√7 C) 8 D) 4 E) √7
In these type of question u multiply the nominator and denominator with conjugate...Conjugate of 8 +3sqrt(7) is 8 -3sqrt(7)   sqrt[2sqrt(63) + 2 { 8 - 3sqrt(7)}/{64 - 63}]   W=sqrt[2sqrt(63) +16 - 2sqrt(63)] =4   Answer is 4.4
<result>D</result>
W=√[2√63 + 2/(8+3√7)] =