Question

Repede vă rog dau coroană ​

Answer 1

Răspuns:

10. a)

$\sqrt{8} + \sqrt{18} - \sqrt{32}$

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

$5 \sqrt{2} - 4 \sqrt{2} = 1 \sqrt{2 }$

b)

$\sqrt{45} + \sqrt{20} - \sqrt{125}$

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

$5 \sqrt{5} - 5 \sqrt{5} = 0$

c)

$\sqrt{27} + \sqrt{243} + \sqrt{75} - \sqrt{108}$

$3 \sqrt{3} + 9 \sqrt{3} + 5 \sqrt{3} - 6 \sqrt{3}$

$12 \sqrt{3} - 1 \sqrt{3} = 11 \sqrt{3}$

d)

$\sqrt{72} - \sqrt{98} + \sqrt{128}$

$6 \sqrt{2} - 7 \sqrt{2} + 8 \sqrt{2}$

$- 1 \sqrt{2} + 8 \sqrt{2} = 7 \sqrt{2}$

11. a)