document.write( "Question 107047: i need help solving these quadratic equations using the quadratic formula.
\n" ); document.write( "2x^2 - 5x = 3 \r
\n" ); document.write( "\n" ); document.write( "3x^2 - 2x + 1 = 0
\n" ); document.write( "i am trying to solve for x
\n" ); document.write( "2(x-5)^2 = 3
\n" ); document.write( "and this queston also i have been trying to figure these out fo an hour.
\n" ); document.write( "x^2 + 4x + 4 = 7
\n" ); document.write( "

Algebra.Com's Answer #77892 by Annabelle1(69)\"\" \"About 
You can put this solution on YOUR website!
lets start with 2x^2 - 5x = 3\r
\n" ); document.write( "\n" ); document.write( "we have to bring everything together to one side of the equals sign. we get
\n" ); document.write( "2x^2 - 5x -3=0\r
\n" ); document.write( "\n" ); document.write( "the coeffiecient of x^2 (2) is our a (a=2)\r
\n" ); document.write( "\n" ); document.write( "the coeffiecient of x (-5) is our b (b=-5)\r
\n" ); document.write( "\n" ); document.write( "the constant is -3 (c=-3) \r
\n" ); document.write( "\n" ); document.write( "the quadratic formula is \"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\" \r
\n" ); document.write( "\n" ); document.write( "\"x=%28%285+%2B-+sqrt%2849%29%29%2F4+\"
\n" ); document.write( "\"x=5+%2B-1.75\"
\n" ); document.write( "x=6.75 or x= 3.25\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The next one is 3x^2 - 2x + 1 = 0
\n" ); document.write( "here a=3 b= -2 and c=1\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-%28-2%29+%2B-+sqrt%28+%28-2%29%5E2-4%2A3%2A%281%29+%29%29%2F%282%2A3%29+\"
\n" ); document.write( "this one has a negative under the square root sign so there is no solution ( the graph never crosses the x axis)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Next....
\n" ); document.write( "2(x-5)^2 = 3\r
\n" ); document.write( "\n" ); document.write( "expand this out first\r
\n" ); document.write( "\n" ); document.write( "we get
\n" ); document.write( "\"2%28x%5E2-10x%2B25%29=3\"
\n" ); document.write( "\"2x%5E2-20x%2B50-3=0\"
\n" ); document.write( "\"2x%5E2-20x%2B47=0\"
\n" ); document.write( "a=2 b=-20 c=47\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-%28-20%29+%2B-+sqrt%28+%28-20%29%5E2-4%2A2%2A%2847%29+%29%29%2F%282%2A2%29+\"
\n" ); document.write( "you simplify from here\r
\n" ); document.write( "\n" ); document.write( "Hope these have helped\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );