u can use 2 ways ... quadratic formula .... or completing the square ...
Hey All,
I am looking through an engineering book and it has assumed the user can solve this equation and given the answer for C, but I cant figure out how to solve it myself. Can anyone help??
The 2 in 4c2 means squared.
The books answer is C = 99.8
Hope you can help!
Thanks
Use "^" to get powers in LaTex.
Although it is not necessary, I would recommend dividing each number by 4 to simplify the equation: . Now, since the "standard" form for a quadratic equation is " , subtract 59725 from each side to get
There are several ways to solve quadratic equations but most general is the "quadratic formula":
solutions to are given by . Note the " ". There are two solutions to this equation- although there may be other reasons why a negative solution is not valid.
I understand the first bit where we get rid of 59725 and make it look a little simpler, but then that equations just kind of blows me away. Is that the answer or is that what I need to do to get the answer. Do I change a and b to 455 and -553775? and C is still C?
Thanks!
ur is in
here u have commands for LaTex... so u can write it little better
LaTeX:Commands - AoPSWiki
dude... there's no need for u to divide with 4... but when u do that u divide all .... meaning that u can't from
divide with 4 get what u got
is wrooooong
if u are gonna divide it u divide all so u get
P.S. basic
equation would not be changed if u divide it or multiply it with number different from zero... (but all elements of equation)
wait...
let's go easy
when u got any quadratic equation... any u have
now in ur equations that C is actually x or unknown ? are we ok till here ?
now when u look quadratic formula to solve quadratic equation like this
u will have solution of quadratic equation .... but these a,b and c that u put in formula are : a is number that is with , when it is let's say [x^2] means that a=1 ... means it's .... b is number that stands with just x , and c is number that have no x-es