x²-2x-1=0 3x²+2x+1=2x² x²-4x-12=0
x²-16x+63=0 x²+2x-3=0 x²-4x-5=0
x²-8x+16=0 x²+x+1/4=0 x²-x-2=0
x²+4x-12=0 x²+3x-4=0 x²-5x+6=0
x²+5x-6=0 x²-3x-4=0 x²-10x-24=0
x²-2x-1=0 3x²+2x+1=2x² x²-4x-12=0
x²-16x+63=0 x²+2x-3=0 x²-4x-5=0
x²-8x+16=0 x²+x+1/4=0 x²-x-2=0
x²+4x-12=0 x²+3x-4=0 x²-5x+6=0
x²+5x-6=0 x²-3x-4=0 x²-10x-24=0