Pre-Algebra on Khan Academy: No way, this isn’t your run of the mill arithmetic. This is Pre-algebra. You’re about to play with the professionals. Think of pre-algebra as a runway. You’re the airplane and algebra is your sunny vacation destination. Without the runway you’re not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We’re about to take off!

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Hi guys! This video discusses how to solve quadratic equations by factoring. Quadratic equations are equations in one variable say x with highest exponent or degree of 2. When solving quadratic equations by factoring, we always equate to zero. We then factor the quadratic trinomial using the method we have discussed. We then equate the…

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This course will continue on Patreon (http://bit.ly/PavelPatreon) and Lemma (https://lem.ma) https://lem.ma/prep – Best SAT Math Prep, now live! http://bit.ly/ITCYTNew – My Tensor Calculus textbook https://lem.ma/LA – Linear Algebra on Lemma