9x^2+6x+1

9x^2+24x+16

\frac{81}{4}x^2+4x+\frac{16}{81}

\frac{49}{100}x^2+\frac{63}{25}x+\frac{81}{25}

\frac{1}{16}x^2-\frac{16}{25}

9x^2-16

\frac{49}{16}x^2-\frac{1}{121}

\frac{36}{25}x^2+\frac{54}{5}x+\frac{81}{4}

5x^2+6\sqrt{5}x+9

100x^2-36

9x^2-42x+49

\frac{49}{16}x^2-\frac{21}{10}x+\frac{9}{25}

\frac{81}{25}x^2-\frac{12}{5}x+\frac{4}{9}

4x^2-12x+9

5x^2-18\sqrt{5}x+81

4x^2+4x+1

5x^2-18\sqrt{5}x+81

4x^2-1

\frac{81}{16}x^2-\frac{81}{25}

16x^2+80x+100

\frac{81}{25}x^2-\frac{54}{55}x+\frac{9}{121}

2x^2+4\sqrt{2}x+4

x^2-4

5x^2+14\sqrt{5}x+49

\frac{81}{4}x^2-\frac{4}{9}