# Is there a mathematical symbol I can use for "where" in this?

To solve ${x^2} - 15x + 56 = 0$ use the formula $\ x = \frac{{ - b \pm \sqrt {{b^2} - 4ac} }}{{2a}}$ where b = - 15,a = 1,c = 56. Is there a mathematical symbol I can use for "where" in this?

• No! Maybe comma $","$ is the best symbolic way to write it out instead.
– user321268
Apr 26, 2017 at 16:38
• Personally I think it reads better with 'where' left in rather than trying to compress the notation any more. Apr 26, 2017 at 16:39
• (let a in f a) and (f a where a is ...) are already mathematical constructs; there's no need for a symbol. They are equivalent to (\a. f a)(b) Apr 26, 2017 at 17:52
• I like the "where", but my Latex editor doesn't like me putting words and spaces into equations and it breaks the flow if I have to switch to plain text. Apr 27, 2017 at 12:35
• surely there's a workaround for making it usable; latex tends to be very clunky without the right modules May 1, 2017 at 11:42

$$x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\bigg|_{b=-15, a=1, c=56}$$