Question

Теңдеулер жүйесін шешу:

{2x+y=1

{5x+2y=0

Answer 1

2x+y=1
5x+2y=0
~~~~~~~~~
y=1-2x
5x+2(1-2x)=0
~~~~~~~~~~~~~~~
5x+2-4x=0         y=1-2(-2)    
x=-2                   y=1+4
                          y=5

Answer 2

у=1-2х

5х+2у=0

5х+2(1-2х)=0

5х+2-4х=0

х+2=0

х=-2

2*2+у=1

у=-3

Answer 3

{ 8х - 3у=7 {3х + у=9

Answer 4

У=4х²-2

3х-(4х²-2)=1