document.write( "Question 172897: Find the vertex, axis, and the x & y intercepts of \r
\n" ); document.write( "\n" ); document.write( "y= (2x-7) (2x-1)\r
\n" ); document.write( "\n" ); document.write( "please explain step by step \r
\n" ); document.write( "\n" ); document.write( "I would really appreciate any help!
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Algebra.Com's Answer #127764 by jojo14344(1513)\"\" \"About 
You can put this solution on YOUR website!
\"y=+%282x-7%29+%282x-1%29+\"
\n" ); document.write( "Expand:
\n" ); document.write( "\"y=4x%5E2-14x-2x%2B7\"
\n" ); document.write( "\"y=4x%5E2-16x%2B7\"
\n" ); document.write( "Transpose constant to the left, likewise \"copy\" the \"a\" constant of a quadratic eqn --->\"highlight%28a%29x%5E2%2Bbx%2Bc\"to the left. factor out the right term:
\n" ); document.write( "\"y-7%2B4%2Ahighlight%284%29=4%28x%5E2-4x%29\"
\n" ); document.write( "Complete the square by taking \"half\" of '4' on the right term,in this ---> \"4%2F2=2\", then squared it---->\"2%5E2=4\".
\n" ); document.write( "\"y-7%2B16=4%28x%5E2-4x%2Bhighlight%284%29%29\"
\n" ); document.write( "\"y%2B9=4%28x-2%29%5E2\"
\n" ); document.write( "\"y=4%28x-2%29%5E2-9\" --> it follows vertex form, \"a%28x-h%29%5E2%2Bk\"
\n" ); document.write( "where--->\"system%28h=x%2Ck=y%29\"
\n" ); document.write( "So, therefore, the vertex is at (2,-9).
\n" ); document.write( "Axis of symmetry is the x-intercept of the vertex: --->\"highlight%28x=2%29\"
\n" ); document.write( "For Y-Intercept:
\n" ); document.write( "\"F%28x%29=0\"
\n" ); document.write( "\"y=4%280%29%5E2-14%280%29%2B7\"
\n" ); document.write( "\"highlight%28y=7%29\"
\n" ); document.write( "For the X-Intercepts: We solve the eqn:
\n" ); document.write( "\"0=4%28x-2%29%5E2-9\"
\n" ); document.write( "\"9=4%28x-2%29%5E2\"------>\"9%2F4=cross%284%29%28x-2%29%5E2%2Fcross%284%29\"
\n" ); document.write( "\"%2B-sqrt%289%2F4%29=x-2\"
\n" ); document.write( "\"x=2%2B-1.5\" ---->\"system%28x=2%2B1.5=highlight%283.5%29%2Cx=2-1.5=highlight%280.50%29%29\"
\n" ); document.write( "As you see in the graph:
\n" ); document.write( " ---->Vertex (2,-9)
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo
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