Question

a)$2x + 3y = 11 \sqrt{5}$
$3x - 4y = - 9 \sqrt{5}$
URGENT DAU COROANĂ ​

Answer 1

x= V5 si y= 3V5

........................

Answer 2

x=V5 ; y=3V5

Răspuns:

{2x+3y=11V5

{3x-4y=-9V5

2x+3y=11V5 I × 4

=8x+12y=44V5

3x-4y=-9V5 I × 3

=9x-12y=-27V5

8x+12y+9x-12y=44V5-27V5

8x+9x=44V5-27V5

17x=17V5 | : 17

x=V5

3V5-4y=-9V5

-4y=-9V5-3V5

-4y=-12V5 | : ( - 4 )

=>y=3V5