document.write( "Question 1057887: ​(a) For the parabola y= -5x^2+7x+1 find the vertex.
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Algebra.Com's Answer #672882 by josgarithmetic(39617)\"\" \"About 
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The vertex is a maximum as is understood from the negative coefficient on the leading term.\r
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\n" ); document.write( "\n" ); document.write( "Learn this: video - change quadratic equation from general form into standard form, so you can read the vertex
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