document.write( "Question 459800: I need help solving ((( graph the function y= x^2 + 2x - 3 and identify the range if the domain is all real numbers))) \n" ); document.write( "
Algebra.Com's Answer #315311 by poliphob3.14(115)\"\" \"About 
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We write this equation in the standard form \"+y%5E2=a%28x-h%29%5E2%2Bk+\"\r
\n" ); document.write( "\n" ); document.write( "\"y=x%5E2+%2B2x+%2B1-1-3\"=>\"y=%28x%2B1%29%5E2-4\", which represent an upward parabola.\r
\n" ); document.write( "\n" ); document.write( "Since its vertex is the point (-1, -4) the minimum value for y is -4, therefore \r
\n" ); document.write( "\n" ); document.write( "its range is the interval (-4, \"infinity\") or in set notation {y|y>-4}
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