document.write( "Question 66772: Which statement is true for the quadratic equation 0 = -2x^2 - 9x - 4?\r
\n" ); document.write( "\n" ); document.write( "I have gotten to the point of -2x^2 - 9x 4 = 0, but I don't know what to do next. My answers are: A. The product of the roots is 4/9
\n" ); document.write( " B. The product of the roots is -2.
\n" ); document.write( " C. The sum of the roots is 9/2.
\n" ); document.write( " D. The sum of the roots is -9/2
\n" ); document.write( "I do know that C is not a correct answer (my teacher told me so). THANKS\r
\n" ); document.write( "\n" ); document.write( "Oh, by the way I don't have a textbook pg. because our teacher just gave us the problems on paper. \n" ); document.write( "

Algebra.Com's Answer #47458 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let's solve the equation to find out what the roos are:
\n" ); document.write( " $\"-2x%5E2-9x-4+=+0\"$ Divide both sides by -1 to facilitate solving.
\n" ); document.write( " $\"2x%5E2%2B9x%2B4+=+0\"$ Factor the left side.
\n" ); document.write( " $\"%282x%2B1%29%28x%2B4%29+=+0\"$ Apply the zero product principle.
\n" ); document.write( " $\"2x%2B1+=+0\"$ and/or $\"x%2B4+=+0\"$
\n" ); document.write( "If $\"2x%2B1+=+0\"$ then $\"2x+=+-1\"$ and $\"x+=+-1%2F2\"$
\n" ); document.write( "If $\"x%2B4+=+0\"$ the $\"x+=+-4\"$
\n" ); document.write( "So the roots are:
\n" ); document.write( " $\"x+=+-1%2F2\"$ and $\"x+=+-4\"$
\n" ); document.write( "The product of these roots is: $\"%28-1%2F2%29%28-4%29+=+2\"$
\n" ); document.write( "The sum of these roots is: $\"%28-1%2F2%29%2B%28-4%29+=+-9%2F2\"$ \n" ); document.write( "

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