Question

Am nevoie la aceste exerciții !Dau coronița! Vă promit ! ​

Answer 1

Salut.

11.

a)

$=-2\sqrt{2} \\x^{2} =(-2\sqrt{2})^{2} =4*2=8$

d)

$=5*2\sqrt{6} -2*3\sqrt{6} =10\sqrt{6} -6\sqrt{6} =4\sqrt{6} \\\\x^{2} =(4\sqrt{6})^{2} =16*6=96$

12.

a)

$=3\sqrt{2} \\\\x^{3} =(3\sqrt{2})^{3}=27*2\sqrt{2} =54\sqrt{2}$

d)

$=10\sqrt{3} -20\sqrt{3} =-10\sqrt{3} \\\\(-10\sqrt{3})^{3} =3000\sqrt{3}$

13.

$=2\sqrt{3} \\\\(2\sqrt{3})^{2} =4*3=12$

d)

$=3\sqrt{6} -2\sqrt{6} -5\sqrt{6} =-4\sqrt{6} \\\\x^{2} =(-4\sqrt{6})^{2}=16*6=96$