document.write( "Question 924886: Need help graphing f(x)=-x^2+2x+5 \n" ); document.write( "
Algebra.Com's Answer #561152 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi
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document.write( "f(x)= ax^2 + bx + c
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document.write( "f(x) = -x^2+2x+5    P(0,5) on this parabola
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document.write( "the vertex form of a Parabola opening up(a>0) or down(a<0), \"y=a%28x-h%29%5E2+%2Bk\"
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document.write( "f(x) = -x^2+2x+5 
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document.write( "Completing the Square to Find Vertex Form  
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document.write( "f(x) = -(x - 1)^2 + + 1 + 5     Note: h = \"-%282%2F2%28-1%29%29+\" = 1 
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document.write( "f(x) = -(x - 1)^2 + 6
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document.write( "parabola opening downward a = -1 < 0
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document.write( "P(0,5), V(1, 6) Line of symmetry,   x = 1
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document.write( "f(x) = 0,  x = 1 ± √6
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document.write( "Sketch
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