SOLUTION: What values of x, if any are not permitted? x-3/x^2-16 Thank You

Question 20899: What values of x, if any are not permitted?
x-3/x^2-16
Thank You
Answer by venugopalramana(3286) (Show Source): You can put this solution on YOUR website!
x-3/x^2-16
IN MATHS CERTAIN OPERATIONS LIKE DIVISION BY ZERO ,LOG OF ZERO OR A NEGATIVE NUMBER ;OR SQUARE ROOT OF A NEGATIVE NUMBER ETC...ARE NOT PERMITTED IN MATHS .HENCE WE SHOULD SEE THAT X DOES NOT TAKE SUCH VALUES WHICH WILL RESULT IN ADOPTING SUCH PROHIBITED PRACTICES.
HERE IN DENOMINATOR,WE HAVE X^2-16..HENCE IT SHOULD NOT BE ZERO
THAT IS X^2-16=0..OR X^2=16..OR...X=+4 AND -4 ...THERE IS NO OTHER PROHIBITED AREA .HENCE X SHOULD NOT EQUAL +4 AND -4.
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