a) - √12 + √3 = - 2√3 + √3 = - √3
b) 3√2 × ( -4√6) = - 12 √12 = - 12 × 2 √3 = - 24√3
c) √24 : √6 = 2√6 × 1/√6 = 2√6 × √6/ 6 = 2× √36 /6 = 2× 6/6 = 2
d) ( - √15) ⁴= [ ( - √15)²]²= 15²= 225
e) 3√2 : 2√2 = 3√2 ×1/2√2 = 3√2 × √2/ (2×2) = 3×√4/4 = 3×2/4 = 3/2=
= 1 intreg si 1/2
f) √3 : √3 : √3 = √3 × 1/√3 × 1/√3 = √3 ×√3/3 × √3/3 = √27/9= 3√3/9 = √3/3
