Khan Academy
SAT Prep: Test 2 Section 6 Part 5
Addressing problems 15-16 on the practice SAT, Sal draws the diagram necessary for solving the geometry problem in number 15. After solving for the area of the triangle, he goes on to the quadratic equation in number 16, taking care to...
Khan Academy
More Examples of Factoring Quadratics with a Leading Coefficient of 1, Algebra II
Focusing on the intuitive nature of algebra and factoring, Sal demonstrates how to factor quadratic equations efficiently. This video would be great to show in class after a lecture on quadratics or to assign in a computer lab (or...
Khan Academy
Factoring Special Products, Polynomial and Rational Functions, Algebra II
"Just to get the point drilled into your head," Sal continues his lecture on factoring quadratic expressions, focusing on special products. He works to instill the problem-solving skills necessary to factor in equations quickly and...
Khan Academy
SAT Prep: Test 1 Section 6 Part 1
Here, Sal begins section 6 on page 407 of The Official SAT Study Guide, focusing on problems 1-4 in this video. He clarifies that SAT questions are "tricky, but really fast" problems that shouldn't take a lot of time to solve. To prove...
Curated OER
The Quadratic Formula - Algebra Help
I can never remember a formula. If you're like me, watch this video clip for a quick refresher on the quadratic formula. This could be a definite help at homework time, for homeschoolers, or prior to an exam.