Find the solutions of the inequality. | x - 5 | ≥ 3
@E.ali @Yttrium
OK ! The answer off the | x - 5 | is never negative OK ?:)
my question Is why is it never negative?
Because of | | . If each numbers come in this if they was - we have + and if + have + too ! Just this :)
ok understood let me try to solve it
|dw:1379252570316:dw| It is (-infinity, 2] U [8,infinity)
how did you do that @Yttrium
Since it is | | >= 3 You need to create two inequalities x-5 >=3 and x-5 <= -3 And this will lead you to x >= 8 and x <= 2 And then you will form two different lines up to negative and positive infinity. Because one x must be greater than 8 and the other must be less than 2.
ohh ok so how do i write it down on the paper
@Yttrium how do i write it down
You may wish to solve the related "less than" problem and remember that you are solving for what is NOT the answer. The Answer: \(|x-5| \ge 3\) NOT The Answer: \(|x-5| \lt 3\) NOT the answer: The Answer: \(-3 \lt x-5 \lt 3\) EXcluded: \(2 \lt x \lt 8\)
* second to last one is "NOT the answer" only. Cut and paste problem resulted in that wandering "The Answer".
didn't get what exactly u mean by this "Cut and paste problem resulted in that wandering "The Answer"."
@tkhunny didn't get what exactly u mean by this "Cut and paste problem resulted in that wandering "The Answer"."
The third one. It says both "NOT the answer" and "the answer". The second one should not be there.
ok thank you @tkhunny
Join our real-time social learning platform and learn together with your friends!