document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=148929>Question 148929</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need some help with 3 math problems I am getting started but cant get finished can some please so me what I am doing wrong These 2 problems are directions use the square root property to solve the following\r<BR>\n" );
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document.write( "7x^2=21  i got +/-  square root of 3\r<BR>\n" );
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document.write( "(z+3)^2=8  i started like this\r<BR>\n" );
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document.write( "z+3=8  z+5  so my ans is z=5 of z=-5\r<BR>\n" );
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document.write( "This problems direction is complete using the quadratic formula to solve\r<BR>\n" );
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document.write( "15T^2 + 7T - 2 =  0\r<BR>\n" );
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document.write( "x=7 square root 14-4 x 15 x 7 =  14-420/30  =  -406/30  and thats where I get stuck  Thanks for the help Leann </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #109260 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=109260\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 7x^2=21  <BR>\n" );
document.write( "x^2=21/7<BR>\n" );
document.write( "x^2=3<BR>\n" );
document.write( "x=sqrtr3<BR>\n" );
document.write( "x=+/-1.732 answer.<BR>\n" );
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document.write( "(z+3)^2=8 <BR>\n" );
document.write( "first you must square the (z+3) term.<BR>\n" );
document.write( "z^2+6z+9=8<BR>\n" );
document.write( "z^2+6z+9-8=0<BR>\n" );
document.write( "z^2+6z+1=0<BR>\n" );
document.write( "using the quadratic equation:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"z+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "z=(-6+-sqrt[6^2-4*1*1])/2*1<BR>\n" );
document.write( "z=(-6+-sqrt[36-4])/2<BR>\n" );
document.write( "z=(-6+-sqrt32)/2<BR>\n" );
document.write( "z=(-6+-5.65685)/2<BR>\n" );
document.write( "z=-.343/2<BR>\n" );
document.write( "z=-.17165 answer.<BR>\n" );
document.write( "z=(-6-5.65685)/2<BR>\n" );
document.write( "z=-11.65685/2<BR>\n" );
document.write( "z=-5.828 answer.<BR>\n" );
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document.write( "15T^2+7T-2=0<BR>\n" );
document.write( "already used the quadratic formula.<BR>\n" );
document.write( "this problem can be factored without the formula thus:<BR>\n" );
document.write( "(5t-1)(3t+2)=0<BR>\n" );
document.write( "5t-1=0<BR>\n" );
document.write( "5t=1<BR>\n" );
document.write( "t=1/5 <BR>\n" );
document.write( "t=.2 answer.<BR>\n" );
document.write( "3t+2=0<BR>\n" );
document.write( "3t=-2<BR>\n" );
document.write( "t=-2/3<BR>\n" );
document.write( "t=-.66667 answer.<BR>\n" );
document.write( "if you insist on the quadratic formula then:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=%28-b%2B-sqrt%28b%5E2-4%2Aa%2Ac%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"t=%28-b%2B-sqrt%28b%5E2-4%2Aa%2Ac%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "t=(-7+-sqrt7^4-4*15*-2])/2*15<BR>\n" );
document.write( "t=(-7+-sqrt[49+120])/30<BR>\n" );
document.write( "t=(-7+-sqrt169)/30<BR>\n" );
document.write( "t=(-7+-13)/30<BR>\n" );
document.write( "t=(-7+13)/30<BR>\n" );
document.write( "t=6/30<BR>\n" );
document.write( "t=.2 answer.<BR>\n" );
document.write( "t=(-7-13)/30<BR>\n" );
document.write( "t=-20/30<BR>\n" );
document.write( "t=-2/3=-.66667 answer.<BR>\n" );
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document.write( "comment: don't know where you got your math instructions but they are not correct. <BR>\n" );
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