4.
3⁴⁰⁰ = (3⁴)¹⁰⁰ = 81¹⁰⁰
4³⁰⁰ = (4³)¹⁰⁰ = 64¹⁰⁰
3⁴⁰⁰ > 4³⁰⁰
5.
√7 + √10 ≈ 2,65 + 3,16 = 5,81
√3 + √19 ≈ 1,73 + 4,36 = 6,09
√7 + √10 < √3 + √19<br>
6.
(√2004 + √2007)² = 4011 + 2√(2004*2007) = 4011 + 2√4022028
(√2005 + √2006)² = 4001 + 2√(2005*2006) = 4001 + 2√4022030
√2004 + √2007 < √2005 + √2006<br>
7.
∛(2³ + 3*2²√5 + 3*2*(√5)² + (√5)³) = ∛(2+√5)³ = 2+√5
√(2² + 2*2*√5 + (√5)²) + 11/1000 = √(2+√5)² + 11/1000 = 2 + √5 + 11/1000
∛(38 + 17√5) < √(9+4√5) + 11/1000<br>