document.write( "Question 76018: Find the x-intercepts.
\n" ); document.write( "y = x^2 + x - 9\r
\n" ); document.write( "\n" ); document.write( "I am a little confused on how to find the x intercepts, I am familiar with finding they Y-intercepts but I am not understanding the x-intercepts. Please help. Thanks. \n" ); document.write( "

Algebra.Com's Answer #54602 by checkley75(3666) $\"\"$ $\"About$

You can put this solution on YOUR website!
y=x^2+x-9
\n" ); document.write( "set y=0 and solve for x
\n" ); document.write( "0=x^2+x-9
\n" ); document.write( "using the quadratic equation we get:
\n" ); document.write( "x=(-1+-sqrt[1^1-4*1*-9])/2*1
\n" ); document.write( "x=(1+-sqrt[1+36])/2
\n" ); document.write( "x=(1+-sqrt37)/2
\n" ); document.write( "x=(1+-6.08)/2
\n" ); document.write( "x=1+6.08)/2
\n" ); document.write( "x=7.08/2
\n" ); document.write( "x=3.54 answer.
\n" ); document.write( "x=(1-7.08)/2
\n" ); document.write( "x=-6.08/2
\n" ); document.write( "x=-3.54 answer.
\n" ); document.write( " $\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+y+=+x%5E2+%2Bx+-9%29+\"$ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, y = x^2 +x -9). \n" ); document.write( "

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