Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Finding the quadratic formula with just the roots and what "a" is?
roots are ±i√5, passes through (-2,2) find the standard form of quadratic function. I know that your supposed to start out with the intercept form "y=a(x-p)(x-q)" and that you plug it in to make "y=a(x-i√5)(x+i√5)". After that you plug in the point and find out that a=1/3 which makes the intercept form "y=1/3(x-i√5)(x+i√5)" but I'm not sure how to make that into stand form, please help
1 Answer
- grunfeldLv 78 years agoFavorite Answer
This is not the quadratic formula. The following is a quadratic equation.
y = a ( x^2 + 5 )
2 = a ( 4 + 5 )
a = 2 / 9
y = ( 2 / 9 )(x^2 + 5 )
The following is the quadratic formula : x = [ - b + - sqrt ( b^2 - 4ac ) ] / 2a
Source(s): my brain