√15×√20+√27 Tolong dijawab

√15 × √20 + √27
= √15 × √(4 × 5) + √(9 × 3)
= √15 × 2√5 + 3√3
= 2√75 + 3√3
= 2√(25 × 3) + 3√3
= (2 × 5)√3 + 3√3
= 10√3 + 3√3
= 13√3