Question

how to I put this in the quadratic equation?

(x)^2 / (2-x)^2

Answer 1

you foil out the (2-x)^2 which will give you x^2-4x+4

Answer 2

hmmm that wouldn't work in the quadratic formula

Answer 3

You don't. Do you seen one of these? "="

Answer 4

you can put an expression into the quadratic equation

Answer 5

but no you do not put this expression into the quadratic formula... what is the actual question? simplify or what?

Answer 6

I was trying to solve for x.

Answer 7

hmm what's the original material? or what's the context?

Answer 8

It's a chemistry question

Initially, only A and B are present, each at 2.00 M. What is the final concentration of A once equilibrium is reached?

The reversible chemical reaction
A+B⇌C+D
has the following equilibrium constant:
Kc=[C][D]/[A][B]=5.0

Answer 9

(x)^2 / (2-x)^2 = 5.0

Answer 10

ehuman that is incorrect you can't cancel out the (2-x)^2

Answer 11

IF the equation is equal to 0, you can multiply both sides by (2-x)^2 and bobs your uncle it sure does cancel out.

Answer 12

but it wasn't given as an equation it was given as an expression and now you can multiply the (4x^2-4x+4) with 5 and you get x^2=5x^2-20x+20 which you can simplify out to 4x^2-20x+20 which you can put into the quadratic formula

Answer 13

I see. Thank you so much!

Answer 14

not a problem

Answer 15

he posted the missing info while I was posting that, and I did say he was missing info, and that IF he was set to zero, then my explanation was true.
I was being a smarty because I knew he didnt provide enough info at that point to solve it.