document.write( "Question 89760: Find the x-intercepts.
\n" ); document.write( "y = x^2 – 7x – 2\r
\n" ); document.write( "\n" ); document.write( "What is the process to solve this problem? Any assistance is appreciated.
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Algebra.Com's Answer #65288 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
y = x^2 – 7x – 2
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\n" ); document.write( "The x intercepts occur when y = 0, therefore:
\n" ); document.write( "x^2 - 7x - 2 = 0
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\n" ); document.write( "To the value of x, in this equation we have to us the quadratic formula:
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\n" ); document.write( "In this equation a=1; b=-7; c=-2
\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( ":
\n" ); document.write( "\"x+=+%28-%28-7%29+%2B-+sqrt%28+-7%5E2+-+4+%2A+1+%2A+-2+%29%29%2F%282%2A1%29+\"
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\n" ); document.write( "\"x+=+%28%2B7+%2B-+sqrt%28+49+-+%28-8%29+%29%29%2F%282%29+\"; a minus a minus is a plus
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\n" ); document.write( "\"x+=+%28%2B7+%2B-+sqrt%28+49+%2B+8+%29%29%2F%282%29+\";
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\n" ); document.write( "\"x+=+%28%2B7+%2B-+sqrt%28+57+%29%29%2F%282%29+\";
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\n" ); document.write( "Solution 1:
\n" ); document.write( "\"x+=+%28%2B7+%2B7.55%29%2F%282%29+\";
\n" ); document.write( "\"x+=+14.55%2F2\";
\n" ); document.write( "x = +7.275
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\n" ); document.write( "Solution 2:
\n" ); document.write( "\"x+=+%28%2B7+-+7.55%29%2F%282%29+\";
\n" ); document.write( "\"x+=+-.55%2F%282%29+\";
\n" ); document.write( "x = -.275
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\n" ); document.write( "Check both solutions in the original equation\r
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