At least I hope it is, anyway I'd appreciate some help with simplifying this:
\(\displaystyle \Large{\frac{x^2-18x-63}{x^2+24x+63}}\)
The answer is:
\(\displaystyle \Large{\frac{x-21}{x+21}\); \(\displaystyle x \neq -21,-3}\)
But I don't know how to get to it... I have more of these (like \(\displaystyle \frac{a^2-11a+28}{a^2-7a+12}\)), but I suppose it will be the same trick and hope I'll be able to figure the rest out if someone could tell me what the trick is
.
Thanks in advance.
\(\displaystyle \Large{\frac{x^2-18x-63}{x^2+24x+63}}\)
The answer is:
\(\displaystyle \Large{\frac{x-21}{x+21}\); \(\displaystyle x \neq -21,-3}\)
But I don't know how to get to it... I have more of these (like \(\displaystyle \frac{a^2-11a+28}{a^2-7a+12}\)), but I suppose it will be the same trick and hope I'll be able to figure the rest out if someone could tell me what the trick is
.Thanks in advance.