Operations: Addition (+), subtraction (−), multiplication (× or implied by juxtaposition), and division (÷ or /). Coefficients: Numbers multiplied by variables. In 5x, 5 is the coefficient. Terms: The parts of an expression separated by addition or subtraction. In 3x+2, 3x and 2 are terms.

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Solution: $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$ 3. Biquadratic Equations : Higher-degree polynomials that can be solved by swapping out one of the variables for a quadratic one.