This algebra reference sheet contains the following algebraic operations addition, subtraction, multiplication, and division. It also contains associative, commutative, and distributive properties. There are example of arithmetic operations as well as properties of exponents, radicals, inequalities, absolute values, complex numbers, logarithms, and polynomials. This sheet also contains many common factoring examples. There is a description of the quadratic equation as well as step by step instruction to complete the square.
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eCalc.com
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The perfect study site for high school, college students and adult learners. Get help to do your homework, refresh your memory, prepare for a test, ....
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SOS math
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Step-by-step solutions to odd-numbered problems from dozens of precalculus textbooks.
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Hotmath
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In this video, Salman Khan of Khan Academy explains i and imaginary numbers.
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Khan Academy
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How to solve equations with complex numbers
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SOS Math
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Good site for students to look at if they have just been introduced to complex/imaginary numbers. Works some example problems dealing with simplification of complex expressions.
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Pauls Online Math Notes
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