Step-by-step solutions to odd-numbered problems from dozens of pre-algebra textbooks.
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Hotmath
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A helpful scientific calculator that runs in your web browser window.
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Holt Online Learning
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In this video, Salman Khan of Khan Academy shows you how to solve quadratics by factoring.
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Khan Academy
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I use this site for getting an example of factoring by grouping, but it has other examples of factoring too including GCF, factoring trinomials and using the AC Method.
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GCF and Factoring Trinomials
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Interactive Worksheets for practicing factoring of trinomials
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AlgebraHelp.com
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Step-by-step solutions to odd-numbered problems from dozens of algebra textbooks.
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Hotmath
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Excellent site showing examples of algebra, trig, calculus, differential equations, and linear algebra.
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Paul's Online Math Notes
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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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Quiz on Polynomials, Factoring, and Exponential Expressions
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SOS Math
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