Quadritic formula????????

Question

How the heck do u do it, please explan in very good detail and i will be very happy ty

Answer 1

y=mx+b right?

email me for more info

Answer 2

give me a quadratic sum.ill give u an answer.

Answer 3

...................______

x = -b + or -√b*2-4ac| over 2a

I did the best i could.

My teacher taught me a weird song...

X equals negative B, plus or minus square root, B squared minus 4 A C, all over 2 A

Answer 4

x =( -b + or - the square root of b^2  -- 2ac )/2a

Basically, you use this when you have a function written like this:

ax^2 + bx + c = 0

And you can't factor it.

So, here is a sample problem:

2x^2 + 5x - 8 = 0

a= 2

b=5

c= -8

So you plug it in...

x = (-5 + the square root of (5^2 - 2(2)(-8)))/2(2)

x= (-5 - the square root of (5^2 - 2(2)(-8)))/2(2)

You plug it in the calculator, solve it, reduce it, and you get your x values =)

Answer 5

quadratic formula:

ax^2+bx+c

b+/- sq root (b^2 - 4ac)

---------------------------------

                      2a

plug the nums in

Answer 6

x is equal to opposite b,

plus or minus square root,

or b squared minus 4ac,

all over 2a

first, you have to change the expression that they give you in to the form of Ax squared + Bx +C

then you plug it in

Answer 7

try this..

http://www.purplemath.com/modules/quadfo...