Colleen wrote:
I believe I found an error in the answer key in the 5th Ed. Algebra 1 Teachers Guide. On Test 4, #9.d., the answer in the key (p. 88) should be (x – y squared)squared, shouldn’t it, rather than (x + y squared) squared?
Dr. Callahan answered:
Factoring trinomials is one of the first major stumbling blocks in Algebra 1.Especially when the equation looks like this: 6x² + 7x + 2 Many students get...
https://youtu.be/wDLppo5hmoQ The 3 Math Mistakes Homeschool Parents Make (and How to Avoid Them) High school math shouldn’t feel like a daily battle—but for...
https://youtu.be/kQ6cMeRqPhc?si=YtcYMFgdA1AqNiiB What Is Pre-Algebra? So let’s clear up the mystery.Pre-algebra is exactly what it sounds like—it’s the...
https://vimeo.com/476368968
This is an error in the book by Master Books (ISBN: 978-0890519851) - the book with the blue cover showing the world. The problem is discussing hens and...
Question from Grace: We are using this test A as a practice test. We can't figure out how to solve this. Answer from Dr. Callahan: Grace, To solve this one,...