|3x + 5| = 12x + 8
3x + 5 = 12x + 8
3x - 12x = 8 - 5
-9x = 3
x = -3
Checking for extraneous solutions:
|3(-3) + 5| = 12(-3) + 8
|-9 + 5| = -36 + 8
|-4| = -28
4 = 28
This is not true, so the solution is x = -3.
Setup and solve the absolute value equation. Don't forget to check for extraneous solutions!
The absolute value of (three x plus five) equals twelve x plus 8.
3 answers
AAAaannndd the bot gets it wrong yet again!
even fails its own arithmetic and logic!
|3x + 5| = 12x + 8
either x > -5/3
3x+5 = 12x+8
9x = -3
x = -1/3
OR x x < -5/3
-(3x+5) = 12x+8
15x = -13
x = -13/15
This solution is extraneous
even fails its own arithmetic and logic!
|3x + 5| = 12x + 8
either x > -5/3
3x+5 = 12x+8
9x = -3
x = -1/3
OR x x < -5/3
-(3x+5) = 12x+8
15x = -13
x = -13/15
This solution is extraneous
The odd thing is that this same question was posted a while back and I corrected it (the same as your answer),
and now the bot is doing it in exactly the same incorrect way,
with the bot's solution even containing this morsel:
...
-9x = 3
x = -3
Who generates these questions which always have the same "poster" as the source and are of the same type ? Is this part of the NEW Jishka ? (LLC)
I am getting very tired of continually having to correct the answers given
by the robot.
and now the bot is doing it in exactly the same incorrect way,
with the bot's solution even containing this morsel:
...
-9x = 3
x = -3
Who generates these questions which always have the same "poster" as the source and are of the same type ? Is this part of the NEW Jishka ? (LLC)
I am getting very tired of continually having to correct the answers given
by the robot.