a) 2√5 + √5 = 3√5
b) 3√7 * 8 = 24√7
c) 6√5 * 1/2√5 = 6 * 5 * 1/2 = 30 * 1/2 = 15
d) (2√3)^2 = 4 * 3 = 12
e) (2√6 / 3)^2 = 4 * 6 / 9 = 24/9 = 2 6/9 = 2 2/3
f) 5[tex]\sqrt[3]{}[/tex]7 - 2,5[tex]\sqrt[3]{}[/tex]7 = 2,5[tex]\sqrt[3]{}[/tex]7
g) 2[tex]\sqrt[3]{}[/tex]-10 - [tex]\sqrt[3]{}[/tex]-10 = [tex]\sqrt[3]{}[/tex]-10
h) (2[tex]\sqrt[3]{}[/tex]-5)^3 = 8 * (-5) = -40
