3√6 + √2 = 3√2 × √3 + √2 = √3 × 3√2 + √2 = √2 (3 + 1) × √3 = 4√2 × √3
5√3 + 3√6 = 5√3 + 3√2 × √3 = 3√2 + 5√3 × √3 = 3√2 + √3 (5 + 1) = 3√2 + √3 × 6
√12 + √18 = √6 × √2 + √6 × √3 = √6 (√2 + √3)
2x + x√3 = x (2 + √3)
