Question

Pls pls pls pls, e Urgent, dau coroană și follow și ce vreți, e ffffffff URGENT ​

Answer 1

a) (x+8)/(x+2)€Z

(x+2+6)/(x+2)€Z

(x+2)/(x+2) +6/(x+2) €Z

1+ 6/(x+2) €Z

1€Z si 6/(x+2)€z

x+2€D6

D6={-6,-3,-2,-1,1,2,3,6}

x+2=-6. x=-8€Z

x+2=-3. x=-5€Z

x+2=-2. x=-4€Z

x+2=-1. x=-3€Z

x+2=1. x=-1€Z

x+2=2. x=0€Z

x+2=3. x=1€Z

x+2=6. x=4€Z

b)(x+5)/(x-2)€Z

(x-2+7)/(x-2)€Z

(x-2)/(x-2)+7/(x-2)€Z

1+7/(x-2)€Z

1€Z. si 7/(x-2)€Z

x-2€D7

x-2€{-7,-1,1-7}

x€{5,1,3,9}

c)2x+1|3x+4/×2

2x+1|2x+1/×3

2x+1|6x+8

2x+1|6x+3

____________

2x+1|(6x+8-6x-3)

2x+1|5

2x+1€D5

2x+1€{-5,-1,1,5}

2x€{-6,-2,0,4}

x€{-3,-1,0,2}