Question

Evaluate √5+2√6 + √8-2√15

Answer 1

after putting values of the roots, the answer will be
-7.357

Answer 2

√5 + 2√6 + 2√2 - 2√15


or

2.236 + 2 × 2.44 + 2×1.414 - 2×3.87
=2.275 approx