1. ## Quadratic Equations! Pls help!

I need to find a number such that the sum of the number and its reciprocal is 20. Anyone, pls?

2. need to refine your question a bit more..

$1/x +x$ will always =1

3. Originally Posted by Zara
I need to find a number such that the sum of the number and its reciprocal is 20. Anyone, pls?
$x + \frac{1}{x} = 20$

$x^2 + 1 = 20x$

$x^2 - 20x + 1 = 0$

You can now use the quadratic formula to calculate the values for $x$

4. Originally Posted by skystar
need to refine your question a bit more..

$1/x +x$ will always =1
Wouldn't that apply to multiplication?

5. ## Thank you!

Hey Thanks a million

6. Originally Posted by Zara
Hey Thanks a million
You are welcome