document.write( "Question 702263: If \"x\" is a root of the quadratic equation \"x%5E2=3-2x\", show that
\n" ); document.write( "a) \"x%5E3=7x-6\",
\n" ); document.write( "b) \"x%5E4=21-20x\".\r
\n" ); document.write( "\n" ); document.write( "I need steps. \"THANKS%21\"
\n" ); document.write( "

Algebra.Com's Answer #432869 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
\"x\" is a root of the quadratic equation \"x%5E2=3-2x\", show that
\n" ); document.write( "a) \"x%5E3=7x-6\",
\n" ); document.write( "b) \"x%5E4=21-20x\".
\n" ); document.write( "**
\n" ); document.write( "x^2=3-2x
\n" ); document.write( "x^2+2x-3=0
\n" ); document.write( "(x+3)(x-1)=0
\n" ); document.write( "x=-3
\n" ); document.write( "or
\n" ); document.write( "x=1
\n" ); document.write( "..
\n" ); document.write( "a) \"x%5E3=7x-6\",
\n" ); document.write( "For x=-3
\n" ); document.write( "-3^3=7*-3-6
\n" ); document.write( "-27=-21-6
\n" ); document.write( "-27=-27
\n" ); document.write( "..
\n" ); document.write( "for x=1
\n" ); document.write( "1^3=7*1-6
\n" ); document.write( "1=1
\n" ); document.write( "..
\n" ); document.write( "b) \"x%5E4=21-20x\"
\n" ); document.write( "for x=-3
\n" ); document.write( "(-3)^4=21-20(-3)
\n" ); document.write( "81=21+60
\n" ); document.write( "81=81
\n" ); document.write( "..
\n" ); document.write( "for x=1
\n" ); document.write( "1^4=21-20(1)
\n" ); document.write( "1=1
\n" ); document.write( "
\n" ); document.write( "
\n" );