document.write( "Question 203927: Please could you help me with this question?\r
\n" );
document.write( "\n" );
document.write( "Find an equation for which -3 and 4 are solutions. \n" );
document.write( "
Algebra.Com's Answer #153856 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! Find an equation for which -3 and 4 are solutions. \n" ); document.write( ". \n" ); document.write( "Remember when you \"factored\" a quadratic and it would give you two solutions? \n" ); document.write( ". \n" ); document.write( "This is sort of a \"reverse\" process. \n" ); document.write( "If -3 and 4 are solutions, then: \n" ); document.write( "(x+3) and (x-4) \n" ); document.write( "MUST be factors. \n" ); document.write( ". \n" ); document.write( "Now, to find an equation -- multiply the two factors together: \n" ); document.write( "(x+3)(x-4) \n" ); document.write( "FOIL: \n" ); document.write( "x^2 - 4x + 3x - 12 \n" ); document.write( "Combine like-terms: \n" ); document.write( "x^2 - x - 12 = 0 (this is what they're looking for) \n" ); document.write( " \n" ); document.write( " |