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Simplifying roots of negative numbers (video) | Khan Academy
This lesson dives into simplifying the square root of negative numbers using 'i', the principal square root of -1. We'll explore how to rewrite negative numbers as products, and use prime …
i as the principal root of -1 (video) | Khan Academy
The video explores the intriguing concept of imaginary numbers, specifically the imaginary unit 'i'. 'i' is equal to the square root of -1, and every complex number can be expressed as a + bi, …
Intro to the imaginary numbers (article) | Khan Academy
Learn about the imaginary unit i, about the imaginary numbers, and about square roots of negative numbers.
Intro to cube roots (video) | Cube roots | Khan Academy
Learn the meaning of cube roots and how to find them. Also learn how to find the cube root of a negative number.
Intro to the imaginary numbers (video) | Khan Academy
Learn about the imaginary unit, "i", a unique number defined as the square root of -1. It's a key part of complex numbers, which are in the form a + bi. The powers of "i" cycle through a set of …
Simplifying roots of negative numbers - Khan Academy
This lesson dives into simplifying the square root of negative numbers using 'i', the principal square root of -1. We'll explore how to rewrite negative numbers as products, and use prime …
Intro to square roots (video) | Radicals | Khan Academy
Yes, square roots can create 2 answers -- the positive (principal) root and the negative root. When you are working with square roots in an expression, you need to know which value you are …
Square root of decimal (video) | Khan Academy
Learn how to find the square root of a decimal number. The problem solved in this video is p^2 = 0.81.
Intro to square roots (video) | Khan Academy
Yes, square roots can create 2 answers -- the positive (principal) root and the negative root. When you are working with square roots in an expression, you need to know which value you are …