document.write( "Question 749485: rectangel QRST, side QR is parallel to x-axis and on y>0 of the quadratic funtion \"y=+-x%5E2+%2B4+\". And the side ST on the y<0 of the quadratic function \"y=+x%5E2+-4\". Let P be the point of intersection of the side QT and the x-axis. Let α be the length of the perimeter of this rectangle. We are to find the x-coordinate of the point P where α is maximized and also to find the maximum value of α. P(x,0) \n" ); document.write( "
Algebra.Com's Answer #455987 by lynnlo(4176)\"\" \"About 
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