4x^2+36x+81

\frac{16}{25}x^2+\frac{48}{55}x+\frac{36}{121}

x^2+2x+1

\frac{16}{81}x^2-\frac{16}{121}

25x^2+70x+49

\frac{81}{4}x^2-6x+\frac{4}{9}

7x^2+10\sqrt{7}x+25

\frac{16}{9}x^2-\frac{49}{16}

100x^2-1

3x^2-14\sqrt{3}x+49

\frac{49}{16}x^2-\frac{7}{10}x+\frac{1}{25}

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

x^2-9

\frac{9}{16}x^2-\frac{27}{20}x+\frac{81}{100}

x^2+4x+4

\frac{9}{4}x^2-\frac{9}{10}x+\frac{9}{100}

x^2-4

7x^2+10\sqrt{7}x+25

7x^2-18\sqrt{7}x+81

\frac{49}{100}x^2-\frac{28}{25}x+\frac{16}{25}

100x^2-64

81x^2+126x+49

3x^2+6\sqrt{3}x+9

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

100x^2-180x+81