document.write( "Question 1063262: Find the x-intercept(s) and the coordinates of the vertex for the parabola y=X^2+6x-7
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Algebra.Com's Answer #678323 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
The quadratic expression is factorable. If you wanted to use Completing the Square, then the term to add and subtract is 9.\r
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\n" ); document.write( "\n" ); document.write( "\"y=x%5E2%2B6x%2B9-7-9\"
\n" ); document.write( "\"y=x%5E2%2B6x%2B9-16\"
\n" ); document.write( "\"y=%28x%2B3%29%5E2-16\"
\n" ); document.write( "The vertex is point (-3,-16).\r
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\n" ); document.write( "\n" ); document.write( "\"%28x%2B3%29%5E2-16=0\"
\n" ); document.write( "\"%28x%2B3%29%5E2=16\"
\n" ); document.write( "\"x%2B3=0%2B-+4\"
\n" ); document.write( "\"x=-3%2B-+4\"
\n" ); document.write( "The x-intercepts are -7 and +1.
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