document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=91611>Question 91611</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have several radical equations I can't figure out how to do.  Can I get help on these two:   <BR>\n" );
document.write( "square root 2-x-4=x   <BR>\n" );
document.write( "answer choices:<BR>\n" );
document.write( "a.  -5<BR>\n" );
document.write( "b.  -2<BR>\n" );
document.write( "c.  -7<BR>\n" );
document.write( "The square root sign is only over the 2-x part of the equation\r<BR>\n" );
document.write( "\n" );
document.write( "The second problem is:<BR>\n" );
document.write( "square root 3x^2+4-2=x<BR>\n" );
document.write( "answer choices:<BR>\n" );
document.write( "a. (0,1) these are the squiggly parenthesis<BR>\n" );
document.write( "b. (0,2) these are the squiggly parenthesis<BR>\n" );
document.write( "c.  2<BR>\n" );
document.write( "The square root sign is only over the 3x^2+4 part of the equation<BR>\n" );
document.write( "Thank you for your help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #66525 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=66525\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> square root 2-x-4=x   <BR>\n" );
document.write( "answer choices:<BR>\n" );
document.write( "a.  -5<BR>\n" );
document.write( "b.  -2<BR>\n" );
document.write( "c.  -7<BR>\n" );
document.write( "The square root sign is only over the 2-x part of the equation<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "sqrt(2-x) - 4 = x<BR>\n" );
document.write( "sqrt(2-x) = x+4<BR>\n" );
document.write( "Square both sides to get:<BR>\n" );
document.write( "2-x = x^2+8x+16<BR>\n" );
document.write( "x^2+9x+14=0<BR>\n" );
document.write( "(x+2)(x+7)=0<BR>\n" );
document.write( "x = -2 or x = -7<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Checking out those answers in the original equation:<BR>\n" );
document.write( "sqrt(2-x) - 4 = x<BR>\n" );
document.write( "If x = -2 you get sqrt(0) -4 = -2 which is false<BR>\n" );
document.write( "If x = -7 you get sqrt(9) -4 = -7 which is true<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Final solution: x=-7<BR>\n" );
document.write( "=============================\r<BR>\n" );
document.write( "\n" );
document.write( "The second problem is:<BR>\n" );
document.write( "square root 3x^2+4-2=x<BR>\n" );
document.write( "sqrt(3x^2+4) - 2 = x<BR>\n" );
document.write( "sqrt(3x^2+4) = x+2<BR>\n" );
document.write( "Square both sides to get:<BR>\n" );
document.write( "3x^2+4 = x^2+4x+4<BR>\n" );
document.write( "2x^2-4x=0<BR>\n" );
document.write( "2x(x-2) = 0<BR>\n" );
document.write( "x=0 or x=2<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Checking out those answer in the original equation:<BR>\n" );
document.write( "sqrt(3x^2+4) - 2 = x<BR>\n" );
document.write( "If x = 0 you get sqrt(4) -2 = 0 which is true<BR>\n" );
document.write( "If x = 2 you get sqrt(16) -2 = 2 which is true<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Final solution: x=0 or x=2<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
document.write( "answer choices:<BR>\n" );
document.write( "a. (0,1) these are the squiggly parenthesis<BR>\n" );
document.write( "b. (0,2) these are the squiggly parenthesis<BR>\n" );
document.write( "c.  2<BR>\n" );
document.write( "The square root sign is only over the 3x^2+4 part of the equation<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );