Forming equation by substitution

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2x+y=7, xy=3

-2x²+14x-3=0

y=5-x, xy=-4

-x²+5x+4=0

y=3x-5, 11x-3y+7=0

2x=22=0

y=x+1, x²+y²=9

2x²+2x-8=0

y=x+6, y=10-2x²

2x²+x-4=0

y=2x-3, xy=7

2x²-3x-7=0

y=-x, x²+y²=49

2x²-49=0

y=x, x²+y²=4

2x²-4=0

y=x-2, x²+y²=36

2x²-4x-32=0

y=x+1, 2x+y=11

3x+1=11

y=2x+1, x²+y²=64

5x²+4x-63=0

y=7-2x, x²+y²=144

5x²-28x-95=0

y=2x, x+3y=8

7x=8

y=x+3, xy=-1

x²+3x+1=0

y=2-x, y = x²-4

x²+x-6=0

y=x+1, xy=6

x²+x-6=0

y=x²+1, y=2x²-1

x²-2=0

y=x+1, y=(x-2)²

x²-5x+3=0

y=x-1, xy=12

x²-x-12=0

y=½x-2, xy=1

½x²-2x-1=0


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