tag:blogger.com,1999:blog-16602794428034479292012-02-09T00:26:51.635-08:00rashhttp://www.blogger.com/profile/09940198599307740464noreply@blogger.comBlogger31100tag:blogger.com,1999:blog-1660279442803447929.post-52397742358960410682009-02-11T14:44:00.000-08:002009-02-11T15:22:53.068-08:00Hello 3E4,<br /><br /> We have learnt the 4 different methods of solving a linear quadratic equation.<br />They are by <br /> 1) Factorisation<br /> 2) Quadratic formula<br /> 3) Completing the square &<br /> 4) Graphical method.<br /><br />Which method would you use for solving this equation:<br />x ² - x - 5 = 0 ?<br /><br />Explain why you chose that method.<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/1660279442803447929-5239774235896041068?l=2ealgebra.blogspot.com' alt='' /></div>rashhttp://www.blogger.com/profile/09940198599307740464noreply@blogger.com25tag:blogger.com,1999:blog-1660279442803447929.post-86171359850285941662008-02-06T20:34:00.001-08:002008-02-06T20:39:48.337-08:00We can use <em><strong><span style="color:#000066;">completing the square</span></strong></em> or <em><strong><span style="color:#000099;">cross-method</span></strong></em> to factorise a quadratic expression.<br /><br />Can <em><span style="color:#ff0000;">x ² + x + 1</span></em> be factorised using any of the methods?<br /><br />Why / why not?<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/1660279442803447929-8617135985028594166?l=2ealgebra.blogspot.com' alt='' /></div>rashhttp://www.blogger.com/profile/09940198599307740464noreply@blogger.com13tag:blogger.com,1999:blog-1660279442803447929.post-79441877138489274302008-02-03T23:32:00.000-08:002008-02-06T20:24:13.667-08:00<div><strong>Is (a + b) ² = a ² + b ² ??</strong><br /><br />Explain that <strong>(a + b) ² = a ² + 2ab + b ²</strong> with the help of the diagram below:</div> <a href="http://3.bp.blogspot.com/_zwcmXDjUPow/R6qHnYsNOCI/AAAAAAAAAAs/10Bbwz7Rusg/s1600-h/Image059.jpg"><img id="BLOGGER_PHOTO_ID_5164089033446209570" style="FLOAT: left; MARGIN: 0px 10px 10px 0px; WIDTH: 124px; CURSOR: hand; HEIGHT: 144px" height="208" alt="" src="http://3.bp.blogspot.com/_zwcmXDjUPow/R6qHnYsNOCI/AAAAAAAAAAs/10Bbwz7Rusg/s320/Image059.jpg" width="152" border="0" /></a><br /><div></div><br /><div></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/1660279442803447929-7944187713848927430?l=2ealgebra.blogspot.com' alt='' /></div>rashhttp://www.blogger.com/profile/09940198599307740464noreply@blogger.com5