October 2018 2 19 Report

Równania!

1) (x+1)(x+4)=x(x+7)

2) (x+1)^2+2x=(x-3)(x+3)-2

Nierówności!

2)


3)

Układy równań!

1) 3x+4y=-5

-2x+y=-4

2) 2x-3y=7

8x+5y=11

3) 2x-3y=12

5x+2y=11

4) -4x+7y=23

6x-5y=-29

5) 2(x-3)-7(y+1)=9

3(x+y)-2(x-y)=-6

Dam naj;)


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