Given that √3+√5√5 ...
Given that √3+√5√5
= x + y√15, find the value of (x + y)
135
125
115
15
Correct answer is C
√3+√5√5 = x + y√15
cross multiply to have: √3 + √5 = x√5 + 5y√3
Collect like roots : x√5 = √5 → x = 1
5y√3 = √3 → y = 15
∴ ( x + y ) = 1 + 15
= 115