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y-(-x)^2-5;y-(-2*x)-2
4;6;3;14
y-(-x)^2-5;y-(-2*x)-2
-5;4;8;1
-5;4;-12;4
| 9x+7=91-3x | | 4x^2-x^4-1=0 | | 12x-1=10x+7 | | 8x+5=10x-15 | | 8X-5=10X-15 | | 45x-x^2-6=0 | | 45x-78x-6=0 | | 45x-78x.x.x=0 | | 6.8+1.6y=34 | | x^3y+2xy+3x+y^3=C | | 6x-80=40 | | 13x-22=30 | | 12x-8x=5x-56x.x | | axy=700 | | 12x-8x=1 | | x(x+5)=215 | | 2789+143= | | 5-(2x-1)(x-1)=(1-x)(2x-2) | | 35+64+43= | | 5x^4-8x^2-13=0 | | 12x^4-16x^3+9x^2-12x=0 | | 7p+2q=18 | | -x-2x^2=0 | | 3/4/9=x/8 | | 14xy+42-18xy=40 | | 4-6*(2+x)=3-5*x | | x^2+x+20000=0 | | 2(4x)=10 | | 4(x-3)=x+6 | | 3f+4=f+13 | | 5x+9=5-3x | | 15x^2+13x+20=0 |