How to Solve the equation
Favorites|Homepage
Subscriptions | sitemap
HOME > > How to Solve the equation

How to Solve the equation

[From: ] [author: ] [Date: 12-11-19] [Hit: ]
and you are correct that there is no way to factorise your equation mentally.I know thats a bit messy but I would hope you know what Im talking about anyway.......
Solve it algebraically using the quadratic formula. Round to 2 decimal places
y=-x^2+2x+9
y=-5x^2+10x+12
My answer came to the conclusion to having -4x^2+8x+3=0
(-2x ? ) (2x ? ) there's no number that can multiple and add to 3 and 8? So i'm having a little trouble finding the solution

-
Your conclusion is perfectly fine, and you are correct that there is no way to factorise your equation mentally. In situations where you can't factorise your quadratic you need to use the quadratic formula:
-b+-sqrt(b^2-4ac)/2a
I know that's a bit messy but I would hope you know what I'm talking about anyway.
Plugging your values into said formula results in 2 solutions:
x = (2+-sqrt(7))/2
1
keywords: equation,to,the,How,Solve,How to Solve the equation
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .