Why No Solution Here?

[nycmathguy]

 

[MathLover1]

|x^2+4x|=-12

it has no solution because absolute value (by definition) cannot be negative, and here we have -12

so, |x^2+4x|=-12 statement is false

 

[nycmathguy]

|x^2+4x|=-12

it has no solution because absolute value (by definition) cannot be negative, and here we have -12

so, |x^2+4x|=-12 statement is false

In another words, you are saying this:

|expression| = positive is ok.

|expression| = negative DNE.

 

[MathLover1]

yes, |x^2+4x|=12 have solutions -6, and 2

 

[nycmathguy]

yes, |x^2+4x|=12 have solutions -6, and 2

Ok. This is just a review. Do you know what time it is? It is time to select 3 David Cohen Questions. Enjoy.

 

[Country Boy]

In another words, you are saying this:

|expression| = positive is ok.

|expression| = negative DNE.

And |expression|= 0 is ok.

 

[nycmathguy]

And |expression|= 0 is ok.

Ok. I didn't know that. Thanks. Good to know.