x2+4x−2=0x² + 4x-2=0x2+4x−2=0
x2+4x−1=0x² + 4x-1=0x2+4x−1=0
x2+2x−1=0x²+2x-1= 0x2+2x−1=0
x2−4x−10=0x²-4x-10=0x2−4x−10=0
