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secondary 3 | A Maths
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Topic: Quadratics: Multiplying and Factoring
https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratics-multiplying-factoring#x2f8bb11595b61c86:intro-factoring
Special products of binomials
Factoring quadratics intro
Factoring quadratics by grouping
Factoring quadratics with difference of squares
Topic: Intro to adding and subtracting rational functions
https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:rational/x2ec2f6f830c9fb89:rational-add-sub-intro/v/algebraic-expression-adding-fractions?modal=1