This is a very cool technique I saw on a video on Mr. H Tutoring. It shows another way to factor when the leading coefficient is not a 1.
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https://youtu.be/zRlUkijc9l0 Solving radical equations can be tricky, especially if you forget to check your solutions. Which is what I used to do in high school... Pay attention to this...
https://youtu.be/GSZYLt5K90U