document.write( "Question 23687: Please help me solve the following quadratic equation. Any help or guidance you offer is greatly appreciated because I am very confused with these types of problems. \r
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document.write( "Find the vertex and intercepts for each quadratic function, and graph.\r
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document.write( "y = -x^2 + 2x + 3\r
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document.write( "Thank you \n" );
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Algebra.Com's Answer #12433 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! Find the vertex and intercepts for each quadratic function, and graph. \n" ); document.write( "y = -x^2 + 2x + 3 \n" ); document.write( "WRITE AS A SQUARE USING X^2 AND X TERMS \n" ); document.write( "Y=3-{(X^2-2*X*1+1^2)-1^2} \n" ); document.write( "Y=3-(X-1)^2+1=4-(X-1)^2 \n" ); document.write( "SINCE (X-1)^2 IS A PERFECT SQUARE IT IS ALWAYS POSITIVE OR MINIMUM ZERO.SO WE GET A MAXIMUM VALUE FOR Y AT X=1..VALUE IS Y=4..THIS IS CALLED VERTEX.YOU CAN SEE IT IN THE GRAPH. \n" ); document.write( "INTERCEPTS MEAN WHERE THE CURVE CUTS THE AXES \n" ); document.write( "PUT X=0 AND FIND Y TO GET Y INTERCEPTS..WE GET Y=3 HENCE 3 IS THE Y INTERCEPT. \n" ); document.write( "PUT Y=0 AND FIND X TO GET X INTERCEPTS...WE GET 0=4-(X-1)^2 \n" ); document.write( "(X-1)^2=4 \n" ); document.write( "X-1=2....OR...X-1=-2 \n" ); document.write( "X=3.....OR......-1... \n" ); document.write( "YOU CAN SEE IT FROM GRAPH GIVEN BELOW. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |