document.write( "Question 522737: how do i find the equation of the parabola, y=ax^2+bx+c, that passes through the following three points : (-2,40),(1,7),(3,15)? \n" ); document.write( "
Algebra.Com's Answer #346976 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Another method, using determinants:
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\n" ); document.write( " Parabola
\n" ); document.write( " x y x^2 Coeff
\n" ); document.write( "Point 1 -2 40 4 1
\n" ); document.write( "Point 2 1 7 1 1
\n" ); document.write( "Point 3 3 15 9 1
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\n" ); document.write( "I have an Excel sheet that does these.
\n" ); document.write( "--> y = 3x^2 - 8x + 12
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\n" ); document.write( "That was no help at all, except for confirming the solution.
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