Question

The sum of √18 and 6√2 is
A. 7√20
B. 14√5
C. 15√2
D. 9√2

Answer 1

D

Explanation:

`√(18) +6 √(2) =\\\\\sqrt{3^(2)*2} +6 √(2)\\=\\3 √(2)+6 √(2)\\\\=9 √(2)`

Answer 2

Answer: Exact Form: 9√2

Decimal Form:

12.72792206

Explanation: Simplify each radical, then combine.