|x| ≤ 1 ⇒ |x^2 − x − 2| ≤ 3|x + 1| im guessing you factor it and cancel out the x+1 then im left with this |x-2| ≤ 3 What do i do from there?
Follow Math Help Forum on Facebook and Google+
. Now by the triangle inequality. . And since that means . Therefore and thus .
View Tag Cloud