Hi Brian. I'm struggling with 2|x+5| > 8 with a greater than or equal to sign. When I apply the method in this video, I get [-11,1] in interval notation however the book answer gives me [-9, -1]. My instructor says I should divide by two instead of subtract 2. Could you provide some clarity on this problem? Thank you sir.
@brianmclogan
6 жыл бұрын
yes divide by 2 since your problem the 2 is being multiplied by the abs sign, where in this video the 2 is subtracting from the abs sign. Isolate the abs sign first then create your two cases
Пікірлер: 4