Question

Ex 9 și 10 va rog????????????????????

Answer 1

Răspuns:

9.

a)

$\sqrt{2} + 2 \sqrt{2} = 3 \sqrt{2}$

b)

$\sqrt{3} + 2 \sqrt{3} = 3 \sqrt{3}$

c)

$\sqrt{5} - 2 \sqrt{5} = 1 \sqrt{5}$

d)

$3 \sqrt{2} + 3 \sqrt{2} - 4 \sqrt{2} = 2 \sqrt{2}$

e)

$7 \sqrt{3} + 3 \sqrt{3} - 4 \sqrt{3} = 6 \sqrt{3}$

f)

$2 \sqrt{7} + 3 \sqrt{7} - 5 \sqrt{7} = 0$

10.

a)

x=

$2 \sqrt{2} - 5 \sqrt{2} + 3 \sqrt{3} = - 3 \sqrt{2} + 3 \sqrt{3}$

y=

$6 \sqrt{5} + 7 \sqrt{2} - 10 \sqrt{2} = 6 \sqrt{5} - 10 \sqrt{2}$

x+y=

$- 3 \sqrt{2} + 3 \sqrt{3} + 6 \sqrt{5} - 10 \sqrt{2} = - 13 \sqrt{2} + 3 \sqrt{3} + 6 \sqrt{5}$

x-y

$- 3 \sqrt{2} + 3 \sqrt{3} - 6 \sqrt{5} - 10 \sqrt{2} = - 13 \sqrt{2} + 3 \sqrt{3} - 6 \sqrt{5}$

b)incearca sa il faci tu,ai exemplu mai sus