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10-07-2015
Mathematics

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How to write y= 2x^2 + 8x +7 in standard (vertex) form

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11-07-2015

[tex]2x^2+8x+7= \\ 2(x^2+4x)+7= \\ 2(x^2+4x+4-4)+7= \\ 2((x+2)^2-4)+7= \\ 2(x+2)^2-8+7= \\ 2(x+2)^2-1 \\ \\ \boxed{y=2(x+2)^2-1}[/tex]

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