We really just need to sticky a math thread X_X

[The_OG_Nelta]

I am having trouble some quadratic equations, how do you solve for t?

d = c + bt + 1/2at^2

[Odon]

42.

[netz]

I am having trouble some quadratic equations, how do you solve for t?

d = c + bt + 1/2at^2

The same way you'd find the roots to any other polynomial.

Quadratic equation - Wikipedia, the free encyclopedia

Follow the formula to victory.

[happydude]

plug em into that equation from wikipedia and u get 2 answers, one of em if i remember right comes out to be a negative answer so thast not the correct one..

[The_OG_Nelta]

I don't know how to complete the square..

[zoobernut]

If you cannot complete the square you can use the quadratic formula to solve for T.

[Woozie]

Is this for a course or is this just something you're doing for fun? I'm going to assume this is for some course, so I don't want to just outright give you the answer if you haven't even attempted it yet. If you have attempted it, show us what you've done so far. We can't really help you if we don't know where you are.

If you type in "How to Complete the Square" in google, I'm sure you'll get some tutorial. Or you can just use the quadratic equation, as mentioned above. try both of these suggestions, and if you're still having trouble, tell us.

Edit: Actually, this looks like it's for a physics course, not a math course (it looks like the distance formula under constant acceleration, d= x0+vt+1/2at^2. Most math courses would have x y and z instead of a's and d's). Is this a physics course or a math course? If this is a physics course, then this problem isn't meant to test your math, and thus, that would change how we answer your question. For future reference, anyone posting any math questions should always tell us if it's for a course (and if so, which course). And if it is for a course, either show us that you've attempted the problem and how far you got, or tell us that you have no clue where to start if that is the case.

[Zanmato]

I would vote for a sticky math thread >.>

This is not really giving away the full solution, but I’d like to give u a head start.

1) You could complete the square,
OR
2) You could use the quadratic formula (which really is derived from completing the squares but you don’t have to know how to complete the square to use it).

See more info here on how to use the formula:
h ttp://en.wikipedia.org/wiki/Quadratic_Formula
(Sorry, can’t post links yet >.<)

Basically, it’s a formula used to solve quadratic equations. For example:
Solve for X where a(X^2) + bX + c = 0.

This will give you 2 values for X, often which 1 would be rejected. For example, I would like to point out that while solving for t in your case (assuming that t is for the time variable), t cannot equal to less than 0. Can’t have negative time so consider only the positive value.

This is a really helpful formula. I can guarantee you that you will make use of this throughout your High-School/University/College career, so you might as well learn it now.

[oldoldman]

Is this for a course or is this just something you're doing for fun? I'm going to assume this is for some course, so I don't want to just outright give you the answer if you haven't even attempted it yet. If you have attempted it, show us what you've done so far. We can't really help you if we don't know where you are.

If you type in "How to Complete the Square" in google, I'm sure you'll get some tutorial. Or you can just use the quadratic equation, as mentioned above. try both of these suggestions, and if you're still having trouble, tell us.

Edit: Actually, this looks like it's for a physics course, not a math course (it looks like the distance formula under constant acceleration, d= x0+vt+1/2at^2. Most math courses would have x y and z instead of a's and d's). Is this a physics course or a math course? If this is a physics course, then this problem isn't meant to test your math, and thus, that would change how we answer your question. For future reference, anyone posting any math questions should always tell us if it's for a course (and if so, which course). And if it is for a course, either show us that you've attempted the problem and how far you got, or tell us that you have no clue where to start if that is the case.

A lot of lower math classes use that formula as a real life application.

[Mistress Stowastiq]

I think a math thread would be very useful. Although I am intimidated by mathies and have absolutely no business in a math thread, I like reading the intense discussions over stats and attributes with various number crunching.