document.write( "Question 907888: If (-3,4) is the vertex of the curve of the the function f , -5 is one of the roots of the equation of (x)=0 , then the other root is?? \n" ); document.write( "

Algebra.Com's Answer #550703 by Fombitz(32388) $\"\"$ $\"About$

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Using the generic vertex form,
\n" ); document.write( " $\"f%28x%29=a%28x-h%29%5E2%2Bk\"$
\n" ); document.write( " $\"f%28x%29=a%28x-%28-3%29%29%5E2%2B4\"$
\n" ); document.write( " $\"f%28x%29=a%28x%2B3%29%5E2%2B4\"$
\n" ); document.write( "When $\"x=5\"$ , $\"f%28x%29=0\"$
\n" ); document.write( " $\"%285%2B3%29%5E2=%28x%2B3%29%5E2\"$
\n" ); document.write( "Take the square root of both sides, use the negative square root.
\n" ); document.write( " $\"-8=x%2B3\"$
\n" ); document.write( " $\"x=-11\"$
\n" ); document.write( " \n" ); document.write( "

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