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Zad10
x²-4+2y=x²-4x+4+y
3x+2y=11
4x+y=8 /*(-2)
-8x-2y=-16
-5x=-5
x=1
3+2y=11
2y=8
y=4
Zad11
x²-2x+1-y²+6y-9=x²-y²
3(x+4)-2(y+4)=6
-2x+6y=8
3x+12-2y-8=6
3x-2y=2 /*3
9x-6y=6
7x=14
x=2
-4+6y=8
6y=12
y=2
Zad12
x²-4x+4-2x+4y=1-9+x²
2x+y=4
-6x+4y=-12
2x+y=4 /*3
6x+3y=12
7y=0
y=0
6x+0=12
Zad13
x²-6x+9-x²+25=2y+48
2x+2y-x+y=3
-6x-2y=14
x+3y=3 /*6
6x+18y=18
16y=32
6x+36=18
6x=-18
x=-3
Zad14
x²-9-3y-x+2=x²-4x+4+y
-2x+y=2
3x-4y=11
-2x+y=2 /*4
-8x+4y=8
-5x=19
x=-3,8
7,6+y=2
y=-5,6
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Zad10
x²-4+2y=x²-4x+4+y
3x+2y=11
4x+y=8 /*(-2)
3x+2y=11
-8x-2y=-16
3x+2y=11
-5x=-5
x=1
3+2y=11
2y=8
y=4
Zad11
x²-2x+1-y²+6y-9=x²-y²
3(x+4)-2(y+4)=6
-2x+6y=8
3x+12-2y-8=6
-2x+6y=8
3x-2y=2 /*3
-2x+6y=8
9x-6y=6
7x=14
x=2
-4+6y=8
6y=12
y=2
Zad12
x²-4x+4-2x+4y=1-9+x²
2x+y=4
-6x+4y=-12
2x+y=4 /*3
-6x+4y=-12
6x+3y=12
7y=0
y=0
6x+0=12
x=2
Zad13
x²-6x+9-x²+25=2y+48
2x+2y-x+y=3
-6x-2y=14
x+3y=3 /*6
-6x-2y=14
6x+18y=18
16y=32
y=2
6x+36=18
6x=-18
x=-3
Zad14
x²-9-3y-x+2=x²-4x+4+y
-2x+y=2
3x-4y=11
-2x+y=2 /*4
3x-4y=11
-8x+4y=8
-5x=19
x=-3,8
7,6+y=2
y=-5,6