document.write( "Question 215378: What is the quadratic equation when the vertex is (0,8)/ it is the maximum/ y-intercept is (0,8)/ the axis of symmetry is 0/ and the x-intercepts are -2 and 2 \n" ); document.write( "
Algebra.Com's Answer #162823 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
What is the quadratic equation when the vertex is (0,8)/ it is the maximum/
\n" ); document.write( " y-intercept is (0,8)/ the axis of symmetry is 0/ and the x-intercepts are -2 and 2
\n" ); document.write( ":
\n" ); document.write( "Using ax^2 + bx + c
\n" ); document.write( "This equation is difference of squares, find a, don't need b, c = 8\r
\n" ); document.write( "\n" ); document.write( "4a - 2b + 8 = 0; x=-2; y=0
\n" ); document.write( "4a + 2b + 8 = 0; x==2; y=0
\n" ); document.write( "----------------addition eliminates b
\n" ); document.write( "8a + 16 = 0
\n" ); document.write( "8a = -16
\n" ); document.write( "a = -16/8
\n" ); document.write( "a = -2
\n" ); document.write( "the equation -2x^2 + 8; \r
\n" ); document.write( "\n" ); document.write( "Looks like this:
\n" ); document.write( "\"+graph%28+300%2C+200%2C+-6%2C+6%2C+-4%2C+10%2C+-2x%5E2+%2B+8%29+\" \n" ); document.write( "
\n" );