document.write( "Question 1125818: For the function, the vertex of the graph is given. Find the unknown coefficients.
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Algebra.Com's Answer #742125 by ikleyn(52884) $\"\"$ $\"About$

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document.write( "From the condition,  y = a*(x+4)^2 + 5 = ax^2 + 8ax + 16a + 5.\r\n" );
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document.write( "Comparing coefficients, you conclude that\r\n" );
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document.write( "    a= 1, b= 8,  c= 21.\r\n" );
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