Răspuns :

Mihaiimbriscaid

Răspuns:

a) 2x + 5 si 6x + 17

d Ι 2x + 5Ι ×(-3)

d Ι 6x+17

d Ι -6x-15

d Ι 6x+17

d Ι 2→ nu sunt prime

b) 7x + 5 si 4x + 3

d Ι 7x+5 Ι ×(-4)

d Ι 4x+3 Ι ×7

d Ι -28x -20

d Ι 28x+21

d Ι 1→ sunt prime

c)3x + 5 si 2x + 3

d Ι 3x + 5 Ι ×(-2)

d Ι 2x + 3 Ι ×3

d Ι -6x-10

d Ι 6x +9

d Ι 1→ sunt prime

d)7x + 4 si 9x + 5

d Ι 7x + 4 Ι ×9

d Ι 9x + 5 Ι × (-7)

d Ι 63x+36

d Ι -63x -35

d Ι 1 → sunt prime

Explicație pas cu pas: