Radical expressions are mathematical expressions that contain radicals (square roots, cube roots, etc.). They involve taking the root of a number or variable.
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Rational Exponents: Rational exponents are another way to express radicals. They allow us to write expressions with fractional exponents instead of using square roots or other radicals.
Simplifying Radicals: Simplifying radicals involves finding perfect square factors within a radical expression and simplifying them by taking them out from under the radical sign.
Imaginary Numbers: Imaginary numbers involve taking the square root of negative numbers. They are denoted by "i" and play an important role in solving certain types of equations involving radicals.