document.write( "Question 102186: If {c,d} is the solution set of x^2-7=6x evaluate the following: c^3+c^2d+cd^2+d^3 \n" ); document.write( "
Algebra.Com's Answer #74360 by edjones(8007)![]() ![]() You can put this solution on YOUR website! x^2-6x-7=0 \n" ); document.write( "(x-7)(x+1)=0 \n" ); document.write( "x=7 x=-1 \n" ); document.write( "so (c,d)=(7,-1) \n" ); document.write( "c^3+c^2d+cd^2+d^3 \n" ); document.write( "=7^3+7^2*-1+7(-1)^2+(-1)^3 \n" ); document.write( "=343-49+49-1=342 \n" ); document.write( "Ed \n" ); document.write( " |