document.write( "Question 586778: Can you find the x-intercepts for the parabola defined by the equation below? And how do you do it im so confused?\r
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document.write( "y = 3x^2 + 18x + 15 \n" );
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Algebra.Com's Answer #373888 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! the x-intercepts are when y equals zero (also called roots)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "0 = 3x^2 + 18x + 15\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "dividing by 3 ___ 0 = x^2 + 6x + 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "factoring ___ 0 = (x + 5)(x + 1)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + 5 = 0 ___ x = -5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + 1 = 0 ___ x = -1 \n" ); document.write( " |