Is my math booklet wrong?

[halouser5454]

Hi everyone,
So there for this equation, you need to solve for c and the equation is: p-q\sqrt{c}=N
I solved it and the answer was: c= (N-p/q)^2
But the booklet shows: c= (p-N/q)^2

Thank you and help would be appreciated.

 

[Deleted member 4993]

Hi everyone,
So there for this equation, you need to solve for c and the equation is: p-q\sqrt{c}=N
I solved it and the answer was: c= (N-p/q)^2
But the booklet shows: c= (p-N/q)^2

Thank you and help would be appreciated.

Please post your work - in detail. It will be very helpu of you could post a picture of your assignment from your booklet.

 

[topsquark]

Hi everyone,
So there for this equation, you need to solve for c and the equation is: p-q\sqrt{c}=N
I solved it and the answer was: c= (N-p/q)^2
But the booklet shows: c= (p-N/q)^2

Thank you and help would be appreciated.

FYI: You mean your answer is c = ( (N - p)/q )^2. This isn't the issue you are asking about but you need the parentheses.

-Dan

 

[HallsofIvy]

You have $p- q\sqrt{c}= N$and you are asking whether $c= (N- p/q)^2$ or $c= (p- N/q)^2$. I would say they are both wrong because they are missing parentheses!

However, $c= ((N- p)/c)^2$ and $c= ((p-N)/c)^2$ are both correct.
While (N- p) and (p- N) have different signs, $(N-p)^2= (p- N)^2$.