(3-x) * (3+x) + (x-2) do 2 potegi = -4y + 2y + 1 2x + y = 4
9-x² +x² -4x+4=-2y+1
2x+y=4
-4x+2y=-12
2x+y=4/*2
4x+2y=8
----------------
4y=-4/:4
y=-1
2x-1=4
2x=4+1
2x=5/:2
x=5/2
x=2,5
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(3-x) * (3+x) + (x-2) do 2 potegi = -4y + 2y + 1
2x + y = 4
9-x² +x² -4x+4=-2y+1
2x+y=4
-4x+2y=-12
2x+y=4/*2
-4x+2y=-12
4x+2y=8
----------------
4y=-4/:4
y=-1
2x-1=4
2x=4+1
2x=5/:2
x=5/2
x=2,5
x=2,5
y=-1