What are common mistakes students make with systems of inequalities?
1 Answer
Oct 19, 2015
Number one is probably forgetting to consider reversing the inequality when multiplying both sides by a value that can be negative.
Explanation:
For example:
#(x+1)/(x-1) < 3#
First step - multiply through by
#x+1 color(red)(<) 3x - 3#
Oops! What if
