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  1. Khan Academy | Khan Academy

    Explore complex numbers and their properties with Khan Academy's free, interactive algebra lessons.

  2. Intro to complex numbers (video) | Khan Academy

    Sal explains how we obtain complex numbers by adding real numbers and imaginary numbers.

  3. Worked example: Order of operations (PEMDAS) - Khan Academy

    The order of operations (PEMDAS) is essential for solving complex math problems. PEMDAS stands for Parentheses, Exponents, Multiplication and Division (same level), and Addition and …

  4. Exponents & radicals | Khan Academy

    In this unit, we review exponent rules and learn about higher-order roots like the cube root (or 3rd root). We'll learn how to calculate these roots and simplify algebraic expressions with radicals.

  5. Multiply complex numbers (practice) | Khan Academy

    Multiply complex numbers VA.Math: A2.EO.4.c VA.Math.2023: A2.EO.4.c Google Classroom Microsoft Teams Multiply and simplify the following complex numbers:

  6. Complex numbers and quadratic equations | KA Math Class 11

    Algebra of complex numbers Learn Adding complex numbers Subtracting complex numbers

  7. Free Math Worksheets - Khan Academy Blog

    Mar 15, 2021 · They’ll help you assign the perfect practice for each student from our full math curriculum and track your students’ progress across the year. Plus, they’re also 100% free — …

  8. Complex Numbers | TG Math Class 12 | Khan Academy

    Practice Modulus (absolute value) of complex numbers Get 3 of 4 questions to level up!

  9. Multiplying complex numbers (article) | Khan Academy

    Complex numbers live in 2D (real + imaginary). To go beyond that — into higher-dimensional "imaginary" systems — you'd get into things like quaternions, which use i, j, and k as …

  10. Manipulating functions before differentiation - Khan Academy

    Let's explore how manipulating functions before differentiating can make our calculus journey smoother and quicker. By tweaking our functions a bit, we can make differentiation less …