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# Irrational and Complex Numbers Homework Help Resources

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ResourceSpotlight
 Students calculate problems from the student worksheet to determine the rules for adding, subtracting, multiplying, and dividing complex numbers. Texas Instruments, Inc.
ResourceSpotlight
 Students calculate problems from the student worksheet to determine the rules for adding, subtracting, multiplying, and dividing complex numbers. Texas Instruments, Inc.
ResourceSpotlight
 Students first use the familiar prime factorization method to calculate the GCD and LCM of two numbers. Second, they apply Euclid’s algorithm, an iterative process for finding the GCD, in conjunction with a formula for the LCM given the GCD. In order to use the algorithm, they must first grasp the remainder operation, which they explore via a table of values. Lastly, they check their answers with the calculator’s GCD and LCM functions. Texas Instruments, Inc.
 In this video, Salman Khan of Khan Academy explains complex numbers. Part 2 of 2. Khan Academy
 This video includes sample exercises and step-by-step explanations of imaginary and complex numbers for the California Standards Test. Khan Academy