Current location - Training Enrollment Network - Mathematics courses - Why can the red pen sketch part of high school mathematics do that? Is not a prerequisite, it must be a first, and b is > 0?
Why can the red pen sketch part of high school mathematics do that? Is not a prerequisite, it must be a first, and b is > 0?
Answer? +b？ & lt 1
2ab on both sides:
Answer? +2ab+b？ & lt 1+2ab
(ab) again? & gt0 (the title should be given to ab≠0)