\frac{16}{81}x^2+\frac{56}{27}x+\frac{49}{9}

\frac{9}{16}x^2+\frac{27}{4}x+\frac{81}{4}

x^2+10x+25

100x^2+80x+16

\frac{1}{100}x^2-\frac{4}{45}x+\frac{16}{81}

4x^2+24x+36

\frac{1}{9}x^2-\frac{9}{25}

25x^2-4

x^2-64

81x^2+108x+36

x^2-1

\frac{36}{25}x^2+\frac{8}{5}x+\frac{4}{9}

100x^2+80x+16

9x^2+18x+9

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

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

3x^2-12\sqrt{3}x+36

\frac{1}{9}x^2-\frac{4}{25}

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

3x^2-18\sqrt{3}x+81

2x^2-2\sqrt{2}x+1

\frac{1}{9}x^2+\frac{7}{3}x+\frac{49}{4}

11x^2+18\sqrt{11}x+81

\frac{81}{25}x^2-\frac{49}{81}

16x^2-49