Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #2 20050916 14:47:39
Re: Factoring (X^2  4)Back in High School in my Pre Cal class, I was shown how to factor something like #3 20050917 00:11:51
Re: Factoring (X^2  4)if you want to factor x^24 is easy: (x^2  y^2) = (x + y)*(x  y), in your case (x+2)*(x2) #4 20050917 04:36:13
Re: Factoring (X^2  4)Yeah, always remember the differance of two squares. x^{2}  y^{2} = (x + y)(x  y). Always be on the look out for numbers with integer square roots. For instance x^{2}  25 = x^{2}  5^{2} = (x+ 5)(x5). Also variables with even exponants other (then zero) can always be converted to a square. x^{4} = (x^{2})^{2} A logarithm is just a misspelled algorithm. #6 20050917 08:59:26
Re: Factoring (X^2  4)LOL, maybe I should put that on my todo list.
Example of the first one: Code:[math]\Large x^2  y^2 = (x + y)(x  y)[/math] Now, using the math tag makes things a *little* slower, so best to use when other options fail. I often just cut and paste the symbols from the top of the forum, but there is no "^4", so that is where the math tag could help. "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman 