I WILL VOTE FOR ANY ANSWERS GIVEN
2007-06-07 06:15:52 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
If you need any help on those feel free to message me as i absolutely love doing them!
2007-06-07 09:29:04 · answer #1 · answered by Anonymous · 1⤊ 0⤋
I'm going with Mark B on this one. It's so rare in mathematics that some type of problem is solved with perfect accuracy every time by one single equation. That's why the quadratic formula is so useful. In my studies I have to find roots of very large polynomials (where we don't have the luxury of one single formula), and I always know that I'll be homefree once I can reduce it to a quadratic, thanks to the quadratic formula.
Certainly there's nothing wrong with using a TI-89 or a website when you have ugly coefficients and the calculation would take a while by hand. Just make sure you have the formula in your math toolbox for when you need it.
2007-06-07 06:29:24 · answer #2 · answered by TFV 5 · 0⤊ 0⤋
I agree with Mark B. When I had to solve quadratic equations there wasn't even such a thing as the internet!!! With a bit of practice you'll be able to do it quickly without the aid of a computer.
2007-06-08 12:37:30 · answer #3 · answered by Mike T 6 · 0⤊ 0⤋
There are sites to teach you quadratic equations, but it will not be a good idea to look for automatic solving sites even if they are available, since you will not learn that way.
2007-06-07 06:22:00 · answer #4 · answered by Swamy 7 · 1⤊ 0⤋
Any quadratic equation can be solved by use of the 'quadratic formula' (which is based on 'completing the square)
ax^2 + bx + c = 0
Divide by a
x^2 + b/a x + c/a = 0
move c/a to the other side
x^2 + b/a x = -c/a
complete the square by adding (b/2a)^2 to each side
(x + b/2a)^2 = -c/a + b^2/4a^2
Take the square roots and multiply -c/a by 4a/4a
(x + b/2a) = +- sqr( b^2/4a^2 - 4ac/4a^2)
move b/2a to the other side and simplify inside square root
x = -b/2a +- sqr[(b^2-4ac)/4a^2]
Finally sqr(1/4a^2) is 1/2a
x = [-b +- sqr(b^2-4ac)]/2a
2007-06-08 00:13:17 · answer #5 · answered by welcome news 6 · 1⤊ 0⤋
www.1728.com/quadratc.htm
try this never tried it or know what a quadratic equasion is but google thinks its good
2007-06-07 06:22:56 · answer #6 · answered by purplekittyjem 1 · 0⤊ 0⤋
http://www.1728.com/quadratc.htm
2007-06-07 06:19:40 · answer #7 · answered by KevDawg 1 · 0⤊ 0⤋
www.instacalc.com
click on 'shared calc' then math & science in left hand menu
click on "quadratic solver"
or http://my.instacalc.com/calc/e96c517986d2473cb3be349ca991d3ff
2007-06-07 06:19:18 · answer #8 · answered by DAN H 3 · 0⤊ 0⤋
yea there are sites. google it, because there are way too many. the best equation solver is ti-89. i love it.
2007-06-07 06:18:50 · answer #9 · answered by electric 3 · 0⤊ 0⤋
you can solve almost any quadratic yourself using that formula you probably hate
x = -b +/- sqrt(b^2 - 4ac) / 2a
you can do this!
cheers,
mark
2007-06-07 06:20:37 · answer #10 · answered by Mark B 2 · 4⤊ 0⤋