Topic 6 Review YouTube Video > Mistake found @32'17", #23, I wrote 8^x = 64 instead of 8^x = 1/64. Then 8^x = 1/(8^2). Next, 8^x = 8^-2. And x = -2.
Lesson 6.5 Notes w/Student Companion YouTube Video > Mistake @34'35". Screen share of calculator for Example 5a continues for the rest of the video. Click next link below, "Lesson 6.5 Notes w/Student Companion", for the rest of the notes.
Lesson 5.5 Notes w/Student Companion YouTube Video > Mistake @42'12". #10, x^2+2x+1 should factor to (x + 1)(x + 1), not (x - 1)(x - 1). Final answer should be (x - 4)/((x + 1)(x + 1)), domain: {x | x not = -1}.