if i had squareroot(4+x^2) why can't i simplify it down to (2+x), why isn't that legal?
Follow Math Help Forum on Facebook and Google+
Originally Posted by am1 if i had squareroot(4+x^2) why can't i simplify it down to (2+x), why isn't that legal? is the same as the law is has to be mulitplied by itself times
Last edited by bigwave; Dec 8th 2009 at 10:04 PM. Reason: latex
ok so means to mulitply the inside (4+x^2) by 1/2 if 4 and x are not products of each other?
Because that is just the square root of each term, not the square root of both the terms added together; for example: It equals 2.
Originally Posted by am1 if i had squareroot(4+x^2) why can't i simplify it down to (2+x), why isn't that legal? It isn't "legal" because it gives the wrong answer! is NOT 2+ x because is not equal to .
Last edited by mr fantastic; Dec 9th 2009 at 05:03 AM. Reason: Fixed a latex tag (it's been a while ....!)
View Tag Cloud