document.write( "Question 1063061: Please help find the values of A and B:\r
\n" ); document.write( "\n" ); document.write( "A-B=1 and 2A^2+20=B^3 \n" ); document.write( "
Algebra.Com's Answer #678063 by rothauserc(4718)\"\" \"About 
You can put this solution on YOUR website!
A - B = 1
\n" ); document.write( ":
\n" ); document.write( "1) A = B + 1
\n" ); document.write( ":
\n" ); document.write( "2) 2A^2 + 20 = B^3
\n" ); document.write( ":
\n" ); document.write( "substitute for A in equation 2 using equation 1
\n" ); document.write( ":
\n" ); document.write( "2(B+1)^2 + 20 = B^3
\n" ); document.write( ":
\n" ); document.write( "2(B^2+2B+1) + 20 = B^3
\n" ); document.write( ":
\n" ); document.write( "2B^2 +4B +2 + 20 = B^3
\n" ); document.write( ":
\n" ); document.write( "B^3 -2B^2 -4B -22 = 0
\n" ); document.write( ":
\n" ); document.write( "a graph of this equation will help
\n" ); document.write( ":
\n" ); document.write( "\"+graph%28+300%2C+200%2C+-0.3%2C+5.2%2C+-35%2C+40%2C+x%5E3-2x%5E2-4x-22%29+\"
\n" ); document.write( ":
\n" ); document.write( "B is approximately 4.2
\n" ); document.write( ":
\n" ); document.write( "*********************
\n" ); document.write( "A is 5.2 and B is 4.2
\n" ); document.write( "*********************
\n" ); document.write( ":\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );