The root quadratic equation of
is 
What is the formula used to calculate the quadratic equation?
To solve the quadratic equation use the formula of 
Find the quadratic equation by using the formula ?
On comparing with 
We get , 

By using the formula,
For a quadratic equation of the form
the solutions are


Apply rule,

Apply exponent rule,
if n is even


Multiply the numbers :

Add the number 
Answer: 4
Explanation: because 0s aren’t significant and after the decimal point, there was to be a value greater than 0 than the rest are sig figs.
<span>When two point charges are a distance d apart, the electric force that each one feels from the other has magnitude F. In order to make this force twice as strong, the distance would have to be
changed to
When two point charges are a distance d apart, the electric force that each one feels from the other has magnitude F. In order to make this force twice as strong, the distance would have to be
changed to
d/âš2</span>