document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=170751>Question 170751</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This is the last portion of my homework and my tutor is out of town for the holidays, is it possible that someone can assist me on this? Thank you!\r<BR>\n" );
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document.write( "Determine whether the following equations have a solution or not? Justify your answer.<BR>\n" );
document.write( "a) x2 + 6x - 7 = 0<BR>\n" );
document.write( "b) z2 + z + 1 = 0<BR>\n" );
document.write( "c) (3)1/2y2 - 4y - 7(3)1/2 = 0<BR>\n" );
document.write( "d) 2x2 - 10x + 25 = 0<BR>\n" );
document.write( "e) 2x2 - 6x + 5 = 0<BR>\n" );
document.write( "f) s2 - 4s + 4 = 0<BR>\n" );
document.write( "g) 5/6x2 - 7x - 6/5 = 0<BR>\n" );
document.write( "h) 7a2 + 8a + 2 = 0<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #126052 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=126052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) x2 + 6x - 7 = 0<BR>\n" );
document.write( "(x+7)(x-1)=0<BR>\n" );
document.write( "x+7=0<BR>\n" );
document.write( "x=-7 ans.<BR>\n" );
document.write( "x-1=0<BR>\n" );
document.write( "x=1 ans.<BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "b) z2 + z + 1 = 0<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%29+x2+%2B+6x+-+7+=+0%0D%0A%28x%2B7%29%28x-1%29=0%0D%0Ax%2B7=0%0D%0Ax=-7+ans.%0D%0Ax-1=0%0D%0Ax=1+ans.%0D%0A-------------------------%0D%0Ab%29+z2+%2B+z+%2B+1+=+0%0D%0A ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >z = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}<BR>\n" );
document.write( "z=(-1+-sqrt[1^2-4*1*1])/2*1<BR>\n" );
document.write( "z=(-1+-sqrt[1-4])/2<BR>\n" );
document.write( "z=(-1+-sqrt-3)/2<BR>\n" );
document.write( "z=(-1+-1.732)/2<BR>\n" );
document.write( "z=-1/2+-.866i<BR>\n" );
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document.write( "I'll leave the rest for you to solve.<BR>\n" );
document.write( "c) (3)1/2y2 - 4y - 7(3)1/2 = 0<BR>\n" );
document.write( "d) 2x2 - 10x + 25 = 0<BR>\n" );
document.write( "e) 2x2 - 6x + 5 = 0<BR>\n" );
document.write( "f) s2 - 4s + 4 = 0<BR>\n" );
document.write( "g) 5/6x2 - 7x - 6/5 = 0<BR>\n" );
document.write( "h) 7a2 + 8a + 2 = 0<BR>\n" );
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