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April 23, 2014

Homework Help: grade 11 math

Posted by priya on Monday, November 1, 2010 at 10:24pm.

I don't get how to do this. I'm so lost please help me.

Determine the equation of the parabola with roots 2+√3 and 2-√3, and is passing through the point (2,5)

this is what i did but its the wrong answer:

y= a[x + (2+√3)] [x+(2-√3)]
5= a[2 + (2+√3)] [2+(2-√3)]
5= a[ 4+√3] [4-√3]
5= 12.99a
a= 0.38

therefore,y = 0.38[x+(2+√3)][x+(2-√3)]
but this is wrong

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