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text: 'If you're at a Math 2 level, you'll probably be familiar with most or all of these sentences and formulas, or you would be able to understand what they meant on a surface level if you were to look them up.\n\n> The [-quadratic_formula] states that the roots of every quadratic expression $ax^2 + bx + c$ are equal to $\\displaystyle \\frac{-b \\pm \\sqrt{b^2 - 4ac}}{2a}$. The expression under the [-square_root], $b^2 - 4ac$, is called the [-discriminant], and determines how many roots there are in the equation.\n\n> The imaginary number $i$ is defined as the primary root of the quadratic equation $x^2 + 1 = 0$.\n\n> To solve the system of linear equations $\\begin{matrix}ax + by = c \\\\ dx + ey = f\\end{matrix}$ for $x$ and $y$, the value of $x$ can be computed as $\\displaystyle \\frac{bf - ce}{bd - ae}$.\n\n> The [-power_rule] in calculus states that $\\frac{d}{dx} x^n = nx^{n-1}$.\n\n> All the solutions to the equation $m^n = n^m$ where $m < n$ are of the form $m = (1 + \\frac 1x)^x$ and $n = (1 + \\frac 1x)^{x+1}$, where $x$ is any positive real number.',
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