Frank

### Questions (125)

 19 How did people get the inspiration for the sums of cubes formula? 17 How would you find the exact roots of $y=x^3+x^2-2x-1$? 16 Difficult integral involving $\arctan x$ 13 Simplifying Ramanujan-type Nested Radicals 8 Proving an alternate quadratic formula [duplicate]

### Reputation (3,845)

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 15 Show that $\sqrt{4 + 2\sqrt{3}} - \sqrt{3}$ is rational. 11 How many way ,we can show $(e^x)'=e^x$ 9 Is there anything like “cubic formula”? 9 Solutions for $a^2+b^2+c^2=d^2$ 9 Expressing $\sqrt[3]{7+5\sqrt{2}}$ in the form $x+y\sqrt{2}$

### Tags (79)

 113 algebra-precalculus × 91 16 radicals × 21 38 nested-radicals × 25 16 analytic-geometry × 2 21 polynomials × 31 16 area × 2 18 elementary-number-theory × 2 12 calculus × 3 17 geometry × 12 11 roots × 12

### Accounts (14)

 Mathematics 3,845 rep 1733 Space Exploration 409 rep 413 History of Science and Mathematics 141 rep 4 Chemistry 133 rep 1311 Mathematica 108 rep 5