- #1
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|(x-1)^2-5x+4|=|(x-1)^2 - 3(x-1)| <= |x-1|^2+3|x-1|
how does that work? i thought triangle inequaility was |x+y| <= |x|+|y|
please explain thanks in advance
how does that work? i thought triangle inequaility was |x+y| <= |x|+|y|
please explain thanks in advance