document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=885409>Question 885409</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help solving : 5-&#8730;x+7 = &#8730;x-8<BR>\n" );
document.write( "(both x+7 and x-8 are both in the square root)\r<BR>\n" );
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document.write( "The answer choices provided are:<BR>\n" );
document.write( "A) {8,-7} B) 0 C) {9} D) {2}\r<BR>\n" );
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document.write( "Also, could you please explain how the get the correct answer?\r<BR>\n" );
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document.write( "Thanks.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #535157 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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/cgi-bin/show-face.mpl?user=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=535157\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5 -square root(x+7) = square root(x-8)<BR>\n" );
document.write( "5 = square root(x-8) + square root(x+7)<BR>\n" );
document.write( "square both sides of =<BR>\n" );
document.write( "25 = (x-8) +2square root(x-8)square root(x-7) +(x+7)<BR>\n" );
document.write( "25 = 2x +2square root(x-8)square root(x-7) -1<BR>\n" );
document.write( "add 1 to both sides of =<BR>\n" );
document.write( "26 = 2x +2square root(x-8)square root(x-7)<BR>\n" );
document.write( "divide both sides of = by 2<BR>\n" );
document.write( "13 = x +square root(x-8)square root(x-7)<BR>\n" );
document.write( "subtract x from both sides of =<BR>\n" );
document.write( "13-x = square root(x-8)square root(x-7)<BR>\n" );
document.write( "use square root rule, square root(ab) = square root(a)squar root(b)<BR>\n" );
document.write( "13-x = square root((x-8)(x+7))<BR>\n" );
document.write( "square both sides of =<BR>\n" );
document.write( "169-26x-x^2 = (x-8)(x+7)<BR>\n" );
document.write( "169-26x-x^2 = x^2-x-56<BR>\n" );
document.write( "-25x = -225<BR>\n" );
document.write( "x = 9<BR>\n" );
document.write( "answer is C\r<BR>\n" );
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document.write( " </SPAN>\n" );
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