document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=77196>Question 77196</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0201719665/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+sqrt+%2850+%2B+7k%29+ ALIGN=MIDDLE  ALT=\"+sqrt+%2850+%2B+7k%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = (k + 8)\r<BR>\n" );
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document.write( "I am supposed to figure out what the variable is. So far, I have squared both sides so the \"50 + 7k\" is no longer a square root. and the k is squared and 8 is now 64. From there, I subtracted 50 from both sides, but then I got to a place where I had to find the square root of \"7k\" and then i got totally lost. Would you be able to help me? Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #55310 by </B><A HREF=/tutors/aboutme.mpl?userid=avidreader27><B>avidreader27(9)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=avidreader27><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=55310\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The first problem occured when you tried to square (k+8).  The answer would not be K^2 and 64.  The square that, you need to multiply like this:\r<BR>\n" );
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document.write( "(k+8)(k+8)  which gives:  k^2+16k+64.\r<BR>\n" );
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document.write( "You then have:\r<BR>\n" );
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document.write( "50+7k = k^2+16k=64\r<BR>\n" );
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document.write( "move the 50 and 7k to the other side:\r<BR>\n" );
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document.write( "k^2+9k+14=0\r<BR>\n" );
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document.write( "then you factor this equation:\r<BR>\n" );
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document.write( "(k+7)(k+2)\r<BR>\n" );
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document.write( "setting each of these = to 0 to solve for k you get:\r<BR>\n" );
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document.write( "k+7=0  and k+2=0\r<BR>\n" );
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document.write( "k= -7 or  -2 <----  answer\r<BR>\n" );
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document.write( "Hope this helps!!! </SPAN>\n" );
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