A. 3

B. 1

C.  $3\sqrt{2}$

D.  $\sqrt{33}$

A. 3

B. 1

C.  $3\sqrt{2}$

D.  $\sqrt{33}$

A.  $\left(S\right): {\left(x-1\right)}^2+{\left(y-1\right)}^2+{\left(z-2\right)}^2=17$

B. $\left(S\right): {\left(x+1\right)}^2+{\left(y+1\right)}^2+{\left(z-2\right)}^2=17$

C. $\left(S\right): {\left(x+1\right)}^2+{\left(y+1\right)}^2+{\left(z+2\right)}^2=17$

D. $\left(S\right): {\left(x+1\right)}^2+{\left(y-1\right)}^2+{\left(z-2\right)}^2=17$

A.  $\left(S\right):{\left(x-1\right)}^2+y^2+{\left(z+3\right)}^2=9.$

B.  $\left(S\right):{\left(x-1\right)}^2+y^2+{\left(z+3\right)}^2=3$

C.  $\left(S\right):{\left(x+1\right)}^2+y^2+{\left(z-3\right)}^2=9$

D.  $\left(S\right):{\left(x+1\right)}^2+y^2+{\left(z-3\right)}^2=3$ 

A. $\left(S\right):{\left(x-1\right)}^2+y^2+{\left(z+3\right)}^2=9.$

B. $\left(S\right):{\left(x-1\right)}^2+y^2+{\left(z+3\right)}^2=3$

C. $\left(S\right):{\left(x+1\right)}^2+y^2+{\left(z-3\right)}^2=9$

D. $\left(S\right):{\left(x+1\right)}^2+y^2+{\left(z-3\right)}^2=3$

A.  ${\left(x+2\right)}^2 +{\left(y-2\right)}^2+{\left(z+1\right)}^2=9$ và   ${\left(x+1\right)}^2 +{\left(y-2\right)}^2+{\left(z+2\right)}^2=9$

B.  ${\left(x-3\right)}^2 +{\left(y-3\right)}^2+{\left(z-3\right)}^2=9$ và   ${\left(x-1\right)}^2 +{\left(y-1\right)}^2+{\left(z+1\right)}^2=9$

C.  ${\left(x+2\right)}^2 +{\left(y-2\right)}^2+{\left(z-1\right)}^2=9$ và   $x^2 + y^{2 }+{\left(z+3\right)}^2=9$

D.  ${\left(x+1\right)}^2 +{\left(y-2\right)}^2+{\left(z+2\right)}^2=9$ và   ${\left(x-2\right)}^2 +{\left(y-2\right)}^2+{\left(z-1\right)}^2=9$

A. I (0;0;-1)

B. I (2;0;0)

C. I (2;0;-1)

D. I (4/3;0;-2/3)

A.x-2y+2z-1=0. 

B.2x+2y+z-18=0.

C.2x-y-2z-10=0. 

D.2x+y+2z-19=0.