Question

Dau coroana!! AM NEVOIE REPEDE

Answer 1

Răspuns:

eu zic că e ,,c-4" sper că e corect

Answer 2

$\frac{x+6}{x-1}$∈Z ⇔

x-1 Ι x+6

x-1 Ι x-1

⇒x-1 Ι (x+6)-(x-1)

⇒x-1 Ι 7

x-1∈{-7,-1,1,7}

x∈{-6,0,2,8}

S=-6+0+2+8=4