document.write( "Question 480038: i need the following problems with the solutions
\n" ); document.write( "1. x^2 -8x^2 + 16 =0
\n" ); document.write( "2. 1/T =r/R - r for R
\n" ); document.write( "3. 7x^2 -2x +4 = 0
\n" ); document.write( "4. F = KmN/r^2 for r
\n" ); document.write( "

Algebra.Com's Answer #328837 by Tatiana_Stebko(1539)\"\" \"About 
You can put this solution on YOUR website!
2. \"1%2FT+=r%2F%28R+-+r%29\" for R
\n" ); document.write( "\"R-r=T%2Ar\"
\n" ); document.write( "\"R=T%2Ar%2Br\"
\n" ); document.write( "\"R=r%28T%2B1%29\"
\n" ); document.write( "3.\"7x%5E2+-2x+%2B4+=+0\"
\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "\"x+=+%28-%28-2%29+%2B-+sqrt%28+%28-2+%29%5E2-4%2A7%2A4+%29%29%2F%282%2A7%29+\"
\n" ); document.write( "\"x+=+%282+%2B-+sqrt%28+-108+%29%29%2F14+\"
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "4. \"F+=+KmM%2Fr%5E2\" for r
\n" ); document.write( "\"F%2Ar%5E2=KmM\"
\n" ); document.write( "\"r%5E2=KmM%2FF\"
\n" ); document.write( "\"r=sqrt%28KmM%2FF%29\"
\n" ); document.write( "1. \"x%5E2+-8x%5E2+%2B+16+=0\"
\n" ); document.write( "\"-7x%5E2=-16\"
\n" ); document.write( "\"x%5E2=16%2F7\"
\n" ); document.write( "
\n" ); document.write( "
\n" );